Cancellation of Contract

I have cancelled my mobile contract with Telkom a long time ago since I don't use them anymore, up to current the are still debiting my account, I went to the store to get assistance one lady assured me that it was cancelled. As I write this review they just debited my account this morning. I have an email to proof that my account was cancelled in May but as an when they see fit they just debit my account.

It doesn't matter which day it is, at some point I was debited around the 18th if the is no money in the account I end up with unnecessary bank charges and a bad credit record. I don't know what to do anymore. I am frustrated by them.

Telkom deserving a minus rating.