Rotten service

I purchased the DSTV 9s decoder with installation from Hifi Corp online and in the afternoon I received a call that they were out of stock and will have to process a refund I should email them my banking details. I asked to ensure that there was no hope of receiving it and the lady reassured me that there's nothing. I sent her the proof of my bank account details and ordered another decorder elsewhere while awaiting my "refund". Today the same "sold out" decoder was delivered and when I tried to ask him to return with it because I'm even waiting for the refund he refused and asked me to sort it first with the store. It's not the drivers fault but the inability of the store to communicate any further arrangements that could have been done. I'm so ****ed off dealing with the mess that I tried to avoid