Unhappy customer

I bought a bed set cover at Home cash, i was not satisfied with the product a i wanted a 5 piece set but i got a 3 piece because tgry had no stock, so now i sent it back within the 14 day period which ended on the 16th of November and i received the goods on the 2nd of November. They told me i was gonna get my refund within 7 days, i waited fir the 7 days and it passed, i called them after 3 days they told me my request has been logged and i was gonna get my refund in 48 to 72 hours, that 72 hours ended on the 5th of December, i jut called them now they are telling they are not sure maybe this week or next week, I'm so angry and unhappy because i feel they don't care, while they got their product back, but now its a hustle for me to get my money back.