I payed for my subscription to premium students but my account is in free edition it hasn't changed, I already check with my bank and the payment was successfully made.
I would appreciate your help.
Glad to have you on the Community. No worries, we're here to help!
If you can't make use of the Premium feautures, could you check out this page and go through the steps? :)
It's good that you already contacted your bank, but let's also be sure to check the following:
Thanks! Let us know how you get on.