****py service from HI fi corp

I lay bye'd a stove at HI Fi Corp in Promenade Mall Mitchell's Plain and today I came to fetch it, and after paying off the balance I'm being told that they do not have it in stock. I already hired transport to come and fetch it and so they told me that the one that they have is R1000 difference and only when I asked for a refund they tell me that I can just pay R500 instead of a R1000 but they can't waive the dilivery fee. That time I have already paid the person I hired to come fetch the stove so basically I wasted my time and money that I paid for Transport and so I wanted a refund if they can't waive the delivery fee and I'm being told to wait for other customers to buy in order for me to get my refund.