MTN ***** account department

I reported a ***** account opened in my name to MTN store in March 2021 and till this day it has not been resolved. I then followed up to submit documents to customer care and ***** department, but I’m not getting a solution. This is affecting my credit rating. I’m being given a 135 number to call, but due to the fact that I do not have an account with MTN I can’t go through the automated response in order to talk to someone who can assist me in resolving this matter. I’m now my credit rating is damaged due to this.