MTN has my name tinted so i might as while be unemployable!

MTN might just have caused me a job due to an ERROR they made in 2019 by stopping my debit orders. 6 -8 months later I was on contact with their legal dep. I paid my errors then was sent a debit order form pf which i sent beginning of August 2020 by then my account was no longer in errors. A year later (2021 August) i call to check when will the last debit go through and I was told of August 2022! Like ***! It looks like my 24 months contract from Oct 2019 - Oct 2021 has miraculously been extended by 10 months. I closed my bank account (i dont work anymore but made sure every month atleast i paid) after that. Have been in EMAIL contact with the Legal Department no one is getting back to me. My account has again been sent to the debt collectors whereby Im now in Default.... A company i app**** for a job at called me 2 days ago quering about this. MTN has my life on hold because of their 2019 Fault!!!