Pathetic service from ARA

I have an account with Ackermans/Tenacity. My account was handed over to ARA and I've had an outstanding balance of R5510.73 and i made 5 payments on to t his account using an easy pay number. i then called in November to ask about my account and they advised that it was closed down and handed back to tenacity. i call tenacity for a settlement offer and they said that the R1000 payment that I ahd made to ARA is not reflecting. i called ARA and asked them to give me a statement of my account showing the payments because i no longer have the receipts of the amounts paid to them and they cannot explain to me why the payment aren't reflecting . they also cannot give me statement of what was paid even though they can se that i've made the payment. i need a statement of my account ARA ?