Bad service - No response to mails or queries

I had a cellphone contract with cell c which ended in August 2021, I was then told I didn’t cancel and was further charged on a month to month basis without knowing of which I then settled in October.

I have been asking for a settlement letter since last year to date. I sent an email again in May 18th 2022 to credit queries and being following up, still no response to date (30/06/2022). I have been calling as well and they say it’s being resolved and clearly not coz my credit score still shows this and it’s being my score point down.

I’m beyond frustrated at this point with the poor service.😡😡😡🤬🤬