Daylight ******h towards a pensioner by Ackermans clothing

Im writing on behalf of my mum a pensioner, Ackermans took advantage of an elderly, my mum paid all her instalments she paid full to the extent that she even paid upfront un aware , few days later she went to Vaalmall branch to asked them to close the acc she was then told that she still has outstanding to pay she provided a proof of payment she was told to email it to head office , few days later head office said they couldn't see any proof of purchase she should resend the proof of payment again, my mum sent a full bank statement whivh shows all the transactions to my suprise my mum is been taken for a ride from pillar to post its so difficult for Ackermans to refund the extra money which was paid by the client(my mum) can someone help in regard my mum cannot be ****** like this...