********** vodacom account opened

We have a situation with the istore the Glen that someone has made a ********** contract in my wife's name and it's been a week after reporting it and vodacom still hasn't gotten back to us about the issue and they deducted the amount from her account and then we stopped the debit order and then guess what vodacom changed the reference number and then deducted from our account again. We haven't been with vodacom for at least 4 years, so how is this possible. Your fruad department has yet to get in contact with us over this matter, we have sent all the required documents and details. We were told by the istore call center that there are a lot of ********** accounts being opened. We are having to pay R80 a time at the bank to stop the debit order and yet the money still gets taken off our account.