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Cancel O2
in 30 seconds only!
Cancellation service #1 in Canada
Calculated on 5.6K reviews

I hereby notify you of my decision to terminate the contract relating to the O2 service.
This notification constitutes a firm, clear and unequivocal intention to cancel the contract, effective at the earliest possible date or in accordance with the applicable contractual period.
Please take all necessary measures to:
– cease all billing from the effective date of cancellation;
– confirm in writing the proper processing of this request;
– and, if applicable, send me the final statement or balance confirmation.
This cancellation is addressed to you by certified e-mail. The sending, timestamping and content integrity are established, making it a probative document meeting electronic proof requirements. You therefore have all the necessary elements to proceed with regular processing of this cancellation, in accordance with applicable principles regarding written notification and contractual freedom.
In accordance with personal data protection rules, I also request:
– deletion of all my data not necessary for your legal or accounting obligations;
– closure of any associated personal account;
– and confirmation of actual data deletion according to applicable privacy rights.
I retain a complete copy of this notification as well as proof of sending.
Important warning regarding service limitations
In the interest of transparency and prevention, it is essential to recall the inherent limitations of any dematerialized sending service, even when timestamped, tracked and certified. Guarantees relate to sending and technical proof, but never to the recipient's behavior, diligence or decisions.
Please note, Postclic cannot:
- guarantee that the recipient receives, opens or becomes aware of your e-mail.
- guarantee that the recipient processes, accepts or executes your request.
- guarantee the accuracy or completeness of content written by the user.
- guarantee the validity of an incorrect or outdated address.
- prevent the recipient from contesting the legal scope of the mail.
Cancellation O2: Easy Method
What is O2
O2 is a telecommunications brand operated by Telefónica in several markets, offering mobile plans, devices, and digital services. It primarily provides voice, data and device sales under contract or pay‑monthly arrangements and may sell devices online, in stores or through resellers.
This guide focuses on cancelling O2-related services from a Canadian consumer perspective and explains typical procedures, refund expectations, consumer rights and next steps.
How to cancel O2
- Prepare your account details (account number, phone number, contract dates) and preferred cancellation date, then follow one of these routes: call O2 customer service from your O2 mobile (or the national contact number listed on O2’s website) to request cancellation and, if needed, a PAC (transfer) code; or send a written cancellation by registered letter stating your intention to withdraw (include contract details and desired end date) to the provider’s service address. For remote purchases, consider exercising the 14‑day cooling‑off right for device returns where applicable but confirm whether returning a device also terminates the service.
What happens when you cancel
When your cancellation is accepted, your access to services typically ends at the agreed termination date. If you requested a PAC code for transferring your number, the code will be provided with an expiry; completing a transfer will end the old contract per provider rules. Any recurring digital subscriptions tied to the account should be separately checked and cancelled if needed.
Data associated with the account (call records, messages, cloud backups) may be retained for a period required by company policy or law; ask customer service for details and request deletion if you need personal data removed. Keep written confirmation of the cancellation and any reference numbers you are given.
Will I get a refund?
Refunds for ongoing mobile service charges are generally limited. In many cases providers do not refund unused portions of a service billing period or remaining contract value unless regulator decisions or specific company policies require it. For remote device purchases there is commonly a 14‑day cooling‑off period allowing returns of the device for refund if returned in required condition, but this may not automatically cancel the service or produce a refund of service charges.
Exceptions can occur: if a provider confirms cancellation within a statutory cooling‑off window or makes an administrative error that bills you after cancellation, you should pursue an immediate refund; if the provider refuses, escalate to the relevant dispute body. If you paid by credit card and charges continue after confirmed cancellation, a chargeback or dispute through your card issuer may be an option.
O2 plans and pricing
| Plan | Price | Period | Features |
|---|---|---|---|
| Breathing Monthly Membership | C$0.49 | Monthly | Breathing feature access |
| HRV Monthly Member | C$4.99 | Monthly | Heart Rate Variability analysis |
| Sleep SpO2 Month Membership | C$12.49 | Monthly | Overnight Sleep SpO₂ analysis |
| Combo Monthly Membership | C$3.99 | Monthly | Combined features (likely HRV + Breathing) |
| Breath Monthly Membership | C$2.99 | Monthly | Breath training |
| HRV Analysis Monthly Member | C$2.99 | Monthly | HRV analysis |
| Upgrade to Month License_2 | C$2.99 | Monthly | License upgrade |
| Upgrade to Month License_1 | C$4.99 | Monthly | License upgrade |
| Month Membership | C$7.99 | Monthly | General monthly access |
Prices shown are from the Canadian App Store (CAD). Applicable taxes (GST/HST) may be added at checkout and are not included in the displayed prices.
Your consumer rights in Canada
Canadian consumer protections generally allow a limited period for returning goods bought remotely, and provincial consumer protection rules and federal guidelines may apply to online purchases of tangible goods. However, those return windows typically relate to products rather than ongoing telecom services, and carriers are not always required to refund unused portions of service contracts unless regulator decisions or provider policies specify otherwise.
If you encounter billing disputes or a provider fails to correctly process a cancellation, you can escalate complaints to the Commission for Complaints for Telecom‑television Services (CCTS) or your provincial consumer protection office. Preserve written confirmation of cancellation, billing records and correspondence, and consider payment‑provider dispute mechanisms (bank or credit card) if unauthorized charges persist.
Customer experiences
Consumer reports and reviews indicate mixed experiences. Some customers successfully cancel by phone or via written notice and receive expected service terminations, while others report administrative errors, continued billing after cancellation or difficulty obtaining refunds for unused service. In remote purchases, device returns within the cooling‑off period are often possible, but problems have been reported with receiving refunds or with customer service handling.
When disputes persist, many consumers report success after escalating to outside dispute bodies or using chargeback procedures, though outcomes vary case by case and depend on documentation and the specifics of the provider’s terms.
Documentation checklist
- Account number, phone number, contract/plan name, signup date, billing statements, proof of payment, written cancellation request (dated and signed), any confirmation numbers or emails from O2, tracking/return receipts for device returns, and copies of registered‑letter proof (postal receipt).
Common mistakes
Common errors include assuming returning a purchased device automatically cancels the service; failing to obtain written confirmation of cancellation; not recording dates and reference numbers from customer service calls; and missing the specific conditions of any cooling‑off period (for example, returning a device in required condition within 14 days). Another frequent problem is not checking recurring digital subscriptions tied to an account, which can continue billing if not cancelled separately.
Comparative recap
| Method | Refund | Difficulty |
|---|---|---|
| Remote purchase (14‑day cooling‑off) | Possible for device if returned in condition; service refunds unlikely unless specified | Low - Medium (depends on return condition and paperwork) |
| Phone cancellation | Service refunds unlikely; may obtain PAC code or termination confirmation | Medium (no standard online cancellation; must call and get confirmation) |
| Registered letter (written notice) | Refunds depend on policy; strong for evidentiary purposes if dispute arises | Medium - High (takes time but improves proof of cancellation) |
After cancelling
After cancellation, keep all confirmations and monitor your bank and card statements for at least two billing cycles. If you receive continued billing, contact the provider immediately with your cancellation evidence. If the provider does not resolve the issue, file a complaint with the Commission for Complaints for Telecom‑television Services: https://www.ccts-cprst.ca/, and consider contacting your credit card issuer or bank for a dispute or chargeback.
For information about consumer rights and provincial offices, consult your provincial consumer protection website and retain all records in case escalation to a regulator or ombudsman is necessary.
Address
Telefónica Germany GmbH & Co. OHG, Servizio clienti, 90345 Norimberga, Germania