Appalling service from the Manager and Staff.

I layby'd curtains from sheet street in East Rand mall 3 months back and i went to release them on the 28th of October, when i got home i realized that the colour doesn't go well with theme in my living room. i went back to the store to return them and was advised by the store manager that they can only issue out a gift card and not a refund, which i was ok with. I bought a couple of things on Saturday and was told i couldn't make too many purchases n that i should come back on Sunday. i went back on Sunday and after spending 20 mins in their store i was told the supervisor went on lunch therefore my purchases cant be authorised and that i should come back later, i bought time n did some eye shopping, i went back to the store and was told the supervisor is still not back and that there is nothing they can do for me. I went back again today, When i got to the store i asked if the manager was there and the lady said yes. I shopped when i got to the cash point i was told the manager is not there to authorise my purchase AGAIN. At this point i realised this is being done deliberately. i drove to Benoni lake side mall to buy my items and there was no authorization that was required which really infuriated me because that means the staff at east rand mall were lying as i suspected. its appalling that people who are hired to do their jobs could be so *********** and relentless in not assisting me. I dont know what their issue was but that's UNACCEPTABLE. Customers should not be treated like that ever! and i dont think ill ever be going back there. Its disgusting to say the least. Its non-sense that i would be treated like that. So if the manager is not in does that mean the store is at a stand still? They just full of ****, all of them