Delaying to release my money

I made an online purchase at TFG ( Archive) on 1 October 2021 for R2199.95 using my FNB app, three day later TFG sent me an email saying that my order has been cancelled cause they no longer have stock and told me to contact my bank so they can realese my money back to my account. I did just that and FNB sent me a form to fill and to send back to them together with the confirmation of cancellation from TFG. They sent me confirmation of receipt and said they will sort the matter within 5 days. 5 days went by I called FNB to ask about my money they told me they will sort it out within 10 working days. 10 working days went by without any communication from them I called again and the lady I spoke to yesterday said I will get my money before the end of the business day yesterday, up until now I have not received my money it is still withheld by the bank and I do not know what else to say to them.