MTN Debt Collectors

I received a call from a debt collection company claiming that my account with MTN is in arrears of R43 000.00. <br> <br> Firstly, I don't have a contract and to the best of my knowledge I have never had an account with MTN. <br> Secondly, could MTN please clarify the details of this assertion as I have no knowledge of such an account.<br> <br> As far as I am concerned these debt collectors are purporting to represent MTN and such an issue has caused much distress and concern.<br> <br>