Poor,poor ,poor service

I would like to share the unpleasant ,poor customers service I receive at Jet Beaufort West ,while I went in store to do an exchange,one of the cashier told me to wait for the boss(manager) who was on lunch at the time because he was the only one that can override.Since I was also on lunch I waited when the manager returned I told him I was there for the exchange and he told me it had to be within a months time frame,I asked the manager does he know the products they sell and went to the sales floor to get the toughees schoolshoes that shows 6 months guarantee.Then he asked me for my slip I told him I do not have since on the same day when I bought the shoes I made a return and they kept the slip on store, now he ask me what was the date and he walks away stating I don't have to bother him on his empty stomach.So I am standing there for an whole hour waiting mind you I am also at work on lunch ,he came back helping another customer while I am standing there waiting for him.He eventually came up to me and I asked him are you going to help me or not ,his response was arrogant telling if i can only give him a date he can check if he can help me.I gave him the date ,while checking for the slip he comments that he not suppose to help me without a slip and that I did not wait for nothing, am I suppose to appreciate that service?