Mtn incompetence

I have never ever received such bad service in my life, my Mtn contract was handed over to their legal account but I was able to settle the account within 2-3months because I did not want it affecting my credit rating (mind you this was default of payments was caused by the covid situation as I was not going to work an not receiving a salary) as soon as things went back to "normal" I called their attorneys and a settlement amount was provided, I EFT'd the amount and called their call Centre after 3 working days to ask if the funds were received an the account in now up-to-date and closed, I was adviced that it was an after a month or two my credit score started picking up again, currently it's back n my score has taken a huge knock. When I call and ask they say that only my arreas were handed over and not the entire account, when I ask to speak to management for further explanation the phone gets dropped or they have knocked off.. This is really an inconvenience as I was in the process of acquiring a house for me and my family. I will sing til my dying days how much of a **** service I received from mtn to every living soul willing to listen.