Poor customer service because of pride

I returned a powerbank I purchased at foschini in promenade and it went like this... Cashier asks me what's wrong with it and I tell her it's not working she then says to someone AASHEEKAH your powerbank isn't working she then comes over takes it from the cashier mumbles under her breath "let me just check because we don't really refund this" so AASHEEKAH checks it plugs it into the pc asks the 2 cashiers behind the counter if they have a cable n they don't so she comes back says IT IS WORKING BUT IT'S FINE giving the cashier permission for the refund so this lying piece of **** couldn't acknowledge that the powerbank wasn't working I actually went there for an exchange but after she made me a **** I didn't want the thing at all. Now I fall to understand why tfg world have someone behind their counter that can't even put a smile on her face. Yesterday I had a billing issue as well purchased something on promotion and the promotion wasn't app****. It was purchased on my husband's account and he signed for the purchase so when I checked the slip and the promotion wasn't seen anywhere I asked the cashier about it be then did a return AASHEEKAH had to come authorize cashier gives me the slip to sign for the return and AASHEEKAH says her husband must sign now 1st of all I'm well aware that for purchases the account holder should sign for purchases but for returns?! Really? Since when? This woman is probably bored and feels the need to dish orders out to feel important she would literally be the sole reason that I do not return to foschini in promenade. Please send this woman on some customer service course she has no people s****s!