Vodacom unfairly blacklisting clients

Vodacom approached me with a cellphone contract deal and i took it then we agreed that i would start paying a month after and i did. Then the lockdown was implemented and i went to my nearest vodacom store and told them that i was unemployed during that time and told them i wouldn't be able to pay and they recorded that or so i thought. When i finally got back to work i went back to them to tell them that i was now able to pay but they said they had sent my account to their lawyers. Even then i called the lawyers and organised an arrangement with them in which i started paying two months back. Now my issue is i have found out that they have blacklisted me in which case i don't get why because i've been in active communication with them throughout. I would like this company to remove my name from the credit bureau for i believe it was unfair of them to blacklist me.