Bad service from capfin

I had a loan with with capfin, now on Tuesday I decided to settle my loan only to notice that I overpaid, I called them the same Tuesday then I was told to email proof of payment and explain in my email what I needed, I did all that and Wednesday morning I called again to confirm receipt of my email which was done and I received an email that says my refund has been logged it will take two working days. Even to date my money is not returned. I called again this morning only to be told that the refund has not been done as I have not sent back the form and was also advised to call again on Monday as accounts department don't work weekends. I did not receive any form just that one email that confirms that the refund will be done. That's very bad service as I needed that money to pay for something on Friday now I don't have the money and will have to wait to call on Monday not sure when this money will be paid back to me as I urgently need that money. The amount we are talking about here is more than R 60 thousand.