Tardy Accounts and Legal Team

I left South Africa to go to NZ in October 2016 and returned in December 2017. At this stage I had a current MTN cellphone account which fell in arrears. In June 2017 I contacted MTN to request a settlement amount. They provided me with a settlement amount which was paid in August 2017. I drew a credit report in December 2017 to find I was handed over to the legal department by MTN for an amount of R999. I contacted MTN who advised I must call the legal department using the 083 808 number. I tried that and each time the phone would be cut off. I emailed them on 3 January 2018 after visiting a branch who could not provide me with a reason or what the R999 was for. In fact on this visit I was told the number in question has been recycled and belongs to someone else. I have not heard from MTN since and Unfortunately this amount still negatively reflects n my profile. PLEASE can someone give me an answer as to when this will be removed from my profile as I will not pay MTN another cent!

I have kept all emails and records and I hope someone contacts me to resolve this urgently!