Unauthorized debits, appalled by service

Cell C you incorrectly debited my account. I've had to call in every week since 7 May to have this sorted out and each week I was told my query would be escalated(without any elaboration that means nothing to a customer but poor service communication). Not once was a turn around time communicated to me. After going through recordings of my contract with you, you acknowledged that I needed to be refunded. I called again and spoke to a very rude Isabel on 12May and she informed me you converted this refund to data. Now, I don't know why that decision was taken on my behalf because you certainly did not debit data from my bank account. Efts take 24 to 48 hours but 6 different consultants I've communicated with are yet to solve my problem. You debited 4.3 times my normal debit amount, without my consent and to be refunded takes you more than a months. This is totally unacceptable!