bad service ..

On Thursday 24.03.2016 my husband brought me a wedding set cash, As a birthday gift. I then didn't like the wedding set he brought me. And then took it back this morning for a full refund.<br> I got at the store the told me that they wont be able to give me my refund due to the fact that they don't have that kind of cash available. The cashier then told me to come back before the store close. With *** attitude.. I then went back to the shop just after 2pm. When I got their lindo told me that she can't exchange the set because the ring had a scratch i told her I never had the rings on my finger because I didn't like. I also told her I've been a cash customer for over 3 years I know how the return policy works. With a bad attitude she told me that I need to come back on tuesday.(tomorrow) when Yolanda is there!! I then told her I won't be able to come back the following day due to the fact that I work and I don't live in Mitchells plain. So I want to know what the hell should I do now?? I do not want the ring set