Bad accounts department ****

I'm extremely tired of this people. I had a contract with them and defaulted in payment. My account was now in arrears which I made a payment arrangement as soon as I started working again. I keep getting calls up to 6 times a day for an account I pay each month since 2022. Their attorneys are harassing me daily for an I account I'm paying. I send an email today to their attorneys and their account department with the pop since last year and their response is " please see your statement and tell us which payments are not reflecting" harbor njani? I sent pop for the to see all my payment that's I've been making and their statement has a lot of things which I cannot even understand. There's debit order reversals which I ddnt do. There's payments of R150 invoices of R240 which I do not know where they are from. Can someone please assist as to who is the ombudsman for these people because I'm a paying debtor whose harrased and my account does not even reduce. I've paid R2350 since August last year and yet my account is still R2800 today. Please help I cannot take it anymore. I normally ignore their calls because I pay but today I answered and a consultant from viljoen attorneys said I last paid in January. I sent all pop and still no one at accounts or viljoen can assist!