Billed for a ********** account at Cell C

A ********** account has been opened on my name, contacted Cell C who then put me through to the Cell C ***** department. Had to send them an affidavit, copy of ID and bank statement. Problem is I still have not so much as recieved a phone call from them. In the mean time, Cell C is trying to debit my bank account religiously on the the 1st, 5th, 10th, 15th, 25th, and 31st of each month for a cell phone number/contract I do not have. The bill is now sitting at R74 000.00. I have to pay for the bounced debit orders which is costly and when I phone them today and spoke to customer care, they told me to hold and the phone went dead. I do not have the time to keep phoning them, I work. No one has contacted me back and I really want this to be sorted out immediately, it is damaging my credit record as well as my bank account. I mean who has such a high cell phone account. Can anyone give me any advise on how to get this sorted out.