Bad customer service

After purchasing goods amounting to R3471(CASH) I get treated bad, I wanted a refund on the flat sheet amounting to R769, I came on the 6th of May and was told they don’t have cash I then came back today still no cash, they are saying I must come back again, haybo I’m using petrol to come here, so they told me to wait I waited a good 30 minutes for someone to pay with cash,what about my time? Not only did Shiela ignore me yet she is in charge of the store, thanks to the sweet Lerato who calmed me down, whatever happened to value of a customer