BAD SERVICE OVER AND OVER

REF- ***On the 11th of January a call was logged With Zola Ngubane regarding a ***** under my name, I did a follow up after 21 working days and spoke to Duduzile Khumalo who advised no call was logged, she then proceeded to log a call with ref ***. Till to date i have not received any response from MTN, all am getting is that this account has been handed to lawyers, how when i did not even receive an update. Transunion also did contact MTN with this regarding, and they advised they are also no getting any response I am really tired now of MTN