Charged for contract that I don't have

On my last debit order there were almost R1250 more deducted than usual. When I followed up with Telkom they indicated it is because of my new freeme contract. I have never app**** for any new contracts. Informing Telkom that this must be stopped and refund my money is a joke. The onus is on me to prove them wrong. Now I have to go to the police station to get an affidavit and submit a lot of other documents as well and then the case will be reviewed. Almost a case of guilty until proven innocent. No guarantees on turnaround time or if I will get a refund, I assume there is a chance next month I will also pay the extra fee. Not only this but to get hold of anyone at Telkom as very difficult and time consuming.