MTN *****ulent

So for the past few months I have been getting emails and sms's that my account is in arrears. A number that I have not used for 12 years. No statements received for this number, no accounts nothing. Just a debt company wanting money. When I go into the store to enquire and close the account they don't even have me on the system!! So they are messing up my credit score on a cellphone number I don't have, I have paid a massive amount of money and then when I want to cancel they tell me they don't have me on the system. PLEASE STAY AWAY FROM MTN AS FAR AS POSSIBLE. THEY ***** YOUR MONEY AND THEN GET THE DEBT PEOPLE TO SEND YOU MAILS STILL CLAIMING MORE BUT YOU ARE NOT EVEN ON THE MTN SYSTEM ANYMORE.