****** by Store Clerk and Product bad quality

I bought an engagement ring from American Swiss on my TFG account @ the Eastgate Shopping centre. When I bought the ring my fiance and I were treated like kings and queens. a Month later the ring cracked at the bottom after American Swiss did the adjustment. By the way when I collected the ring after adjustment I was forced to pay cash, which I did not understand but we will get back to that just now. I was lead to believe at that time that there is a guarantee on workmanship and that if there was a problem American Swiss would fix it as per the words of the store clerk Ayanda. When I returned I was treated very badly by the staff. Ayanda told me that she was aware that I bought the ring from them but refused with insult to assist me in anyway. I was very embarrassed by the sudden change of client care that made me feel I was being ******. So left with no choice I proceeded to Sterns across From American Swiss and had to pay R800 rand to have the ring readjusted. What also bothers me is that Sterns accepted my TFG card for the repair and at American Swiss I was forced to pay cash. I have been ****** of my dignity and money by American Swiss. the Product is bad quality and I am proceeding to contact the CEO as soon as possible.