Worst customer service

I settled my Mr Price earlier this year, now on my balance there is an over payment or amount sitting on credit, I have asked Debt Buster since I’m under debt review to ask the credit amount to be allocated to my Hi-Fi Corp account, it’s been over two months now since Debt Buster been sending e-mail to this date they have not received feedback or action the query, they can’t get hold of them on the phone. This is ridiculous two months of allocating payment.