Unauthorised mobile contracts opened **********ly

MTN accounts were opened 14/10/2014 using my ID and name. I called MTN 03/11/2014 requested them to close these accounts since I have never authorised nor opened any accounts with MTN and I was informed to file and Affidavit with the South Africa Police Services. I did and send it back with my correct ID. Later they responded by email saying I have to include the contract telephone numbers. But I ask where would I get those numbers since I'm not the one who opened those accounts? I called the call centre got those two cell phone numbers and filed another Affidavit and, include all the info they requested with my ID sent it to them . But now no one at MTN is responding to my emails . They debit me R3673.35 so far. Because of this unauthorised debits I have defaulted this month on my kids school fees