Unauthorised debit

I have had enough of telkom mobile This company has zero customer service and they are the most unhelpful people even at the level of escalated complaints .my account for the month is R296 and they debited R896 from my account they ran a debit twice and because of this my other debits did not run off my account I want my money back plus charges for the other debit orders which were returned I have called telkom a total of 6 times and confirmed everything so why the unnecessary drama. A company which people should not do business with .seriously ******* and no one there knows what they doing.i want the amounts back in my account and I want this contract cancelled.i can't associate myself with a company who do not know the first thing about treating customers fairly.i rather pay more and get service.