Bad service complaint

I had a horrible, terrible, very unpleasant experience with the store manager at The Fix Store Riverwalk in Potchefstroom. I had purchased an item and I lost the receipt and needed a refund. I explained when I got there that I had lost the receipt but the item still had a price tag on and I had a proof of purchase on my bank statement, i asked if they would reprint a receipt for me. A lady that was working at the till on the first day was very friendly and said it was possible she was willing to assist but she did not have enough cash to refund me, she then told me that it's okay they will be able to assist me without the receipt but they don't have enough cash at the moment I must come back later. I came back later they still didn't have cash and told me to come back tomorrow i came back the following day , same story. I went back to the store for 3 days since they kept saying they did not have cash until the fourth day when we were assisted by the guy who claimed to be a store manager whom by the way was very RUDE and arrogant towards me . He told me they won't be able to assist me without the receipt. Now my biggest question was why did they kept me coming back to store if they knew they were not going to assist me... spend my fuel and time going back there for 4 days..from the beginning when I went to the store I made it clear that I did not want an exchange I wanted a refund. The person who was representing the store management was so rude for someone who is managing.