***** on my account

I recently had ***** on my account where someone bought more than R 6000 worth of data on my account. I have reported this to the police and have a case number. MTN is still however attempting to deduct this money from my account via debit order. Now my bank is in arrears and I keep being charged R 115 by my bank for bank charges! MTN has furthermore also cut my line and I cannot use it. I have paid the ACTUAL amount I owe each month despite them cutting my line. MTN is now causing for my credit score to be decline.!! STOP deducting the money from my account and sort out this ********** issue.