I need a refund for my recent tariff payment

[Maks1]

I need a refund for the payment I already canceled the tariff

[Cleoriff]

@Maks1 

You may have had an outstanding payment due?

However, you need to contact payment management.

Details here Guide: How to find help & contact O2 

To pay bills, ask for payment extensions or query bills etc, you need to contact the Payment Management Team.

You can reach the Payment Management team on 0800 902 0217 or 0800 032 5302

The opening times are:

Monday to Friday – 8am to 8pm

Saturday – 8am to 6pm

Sunday – 9am to 6pm

https://www.o2.co.uk/help/account-and-billing/payment-support

Best time to call is around 8.00am

You can use Skype to call Guide: A Guide to Skype