Cell C just don't care about their customers

Cell C must be the worst clientele service ever. They messed up my account, which i stopped paying to see if i could get a reaction. Got a response, paid my account up to date, and then they left it again. In December my account was handed over for a default. I questioned it, made sure account is up to date. I phone Cell C asking them why am I showing as arrears on my credit report. they phone, apologized and will sort it out immediatly. That was middle January. Next payment date due was 01/02/2022. So i keep checking my report to see if it was being fixed. To my surprise, on 23/01/2022, BOTH my accounts shows in arrears with the amount due on 01/02/2022???? Yet again I have been forwarding emails on why and if somebody can help me. No Response. So both these contracts are cancelled and ending end of Feb, Next payment due 28/02/2022. Last week 11/02/2022 I paid this final payment to get these people of my back. I have send proof of payments asking them PLEASE fix and these accounts of my name. No response. My credit score dropped with 35 points because of this. So what is the reason??? Why just ignore me? Lack of professional service? Lack of caring?