Nimble Group payment records lost

My Game and PnP account was handed over to Nimble group. I requested a balance on both accounts. Well they have no correct records of payment. I have sent proof of payment for 2 years. I have honored payment every month Their records show last payment was about 2 years ago..They should be shut down as they can't deal with money.Their accounting system does not work .How are we supposed to pay off our debt when they have no records that are correct.. I have spoken to Lwazi and Ntombi and sent emails upon emails .I am not getting anywhere.