Unhappy service at dstv n1 city mall

On the 20th dec 2019 i went to enquire about my ppwer supply that just stopped working. Bought it cash all to find out i was supposed to not have bought it but be exchanged as i have insurance. The consultant contacted me about the error that multi choice had done and i was already gone by then. Mind you its december, people have places to go to and for me to go back again to bring a power supply after multi choice made the error was not sufficient for me as i had to be at work at the same time..consultant promised to do it without me where as she promosed to refund my money but i should still bring the power supply when i have a chance, which the refund wasnt done until i decided to visit ur N1 city branch today to be attended to by a guy called Mkhanyiseli whatever his name is who is a supervisor to tell me the refund wont be processed. Being the person that i am, i decided i will not argue with him as you could see from his expression that he wont assist me. I am very angry because they made an error and i was told it can be sorted without me till today nothing has been done till i decided to visit the N1 city branch and received such. I want my refund and i want it now as there are no problem on my side but a problem on.dstv'z side. If my attitude and colour was different, i believe my query wouldve been attended to but ke im a native. I expect feedback and my refund or else i wont let.this slide.