Poor service from the legal department .

This is my last resort as I’ve been waiting for someone to revert back to me regarding my query . I had a contract which was handed over to SSDA in January 2021 and I’ve been paying them each month . They informed me in December 2021 that the account was handed back to cell c as all payments were in order . I’ve been contacting cell c for the last 4 weeks to assist with a paid up letter however the legal department advised there’s still an amount outstanding of almost R4000 . I told the consultant what SSDA told me and she asked I send the proof of payment or statement to them , I sent it to *** however no one is saying anything . Please note that I will escalate this further to the ombudsman as this is messing up my credit score and the service is pathetic , I have to call 600 times before someone can assist . The initial reference number I was given was *** . I was told the legal department would call me but funny enough they don’t even bother to make any contact .