Cell C is a ****. Breach of Contract and misrepresentation by Cell Ref Nr;

I have a contract upgrade with Cell C which commenced in May 2024. Last year I logged a dispute with Cell C which led to withholding of payments until the case was resolved. Cell C handed my account to HP Attorneys for collection I was given plus minus 60% discount to settle the account, and the amount I had to pay was R2632 which I managed to pay on the 24th of April 2025. In May 2025, 9 made 2 payments of R1500 combined. I have contacted HP Attorneys after the payment and they told me that I overpaid Cell and an amount of R1500 was due to me. I contacted Cell C, and they told me that I still owe them even though I paid the settlement amount as arranged with their collection company. Th8s is a breach of Contract and misrepresentation by Cell C. I took advantage of settlement discount to settle the account but now they're telling me that I still owe them even though their collection agency said I have settled the account and Cell C must contact Infinity credit and refund me an amount of R1500. The last time the account was updated on the credit bureaus was in August last year. Now I look like someone who doesn't honor the payments because of Cell C poor service and mismanagement. This contract was meant to run from May 2024 through April 2026