Disgusting customer service

On Thursday morning I went to De Jagers Willow Bridge to exchange a shorts I bought at Vredenburg mall. When I purchased the short the lady at the mall told me that because I don't live in Vredenburg I am more than welcome to exchange it at any store, because I bought the shorts for my husband and was not sure if he would like the fit. I was in the area of Willow bridge and decided that I would exchange it there for a Jacobs pants because my husband always wears those shorts as he didn't like the fit I bought him. Was I in for a suprise when I entered the store. I approached the till area and a young man short man assisted me I explained I don't have a slip to exchange and he said he can't help us. So I told him I have it on my banking app of he could call Vredenburg store. He told me with a really bad attitude that they he can phone them but it could take long before they send the slip. I told him if he could call I will wait. The he told me the shorts has a fade in front and back and their shorts don't look like that as if I kept it in the sun to fade. I was already irritated with this guy because If you don't want to help us call your manager but he went on and on why he can't exchange it and it will be written off at their stores lost as if this is my problem. I bought it like that and just needed the slip because I want to exchange it. Bearing in mind I am a loyal customer of DeJagers for years and are in their stores every month to buy something and haven't exchange anything yet if I could recall. He got so furious with as and said ok I'll go to the manager and I show you that she will say the same thing. I was schocked because there was 2 other staff members also at the till area none of them told him to calm down and call the manager. He the went to the manager showed her the pants and she then told us that the shorts was sold by them like that and will be reduced and we were fine by that. She then called Vredenburg and they send her the slip in minutes and the exchange was done. I paid in because the shorts I wanted was more. The store manager didn't even apologized to me after I told her I was unhappy about his attitude. Just because we are the same race doesn't mean you don't have to give me the service you give to all the other customers. The other customer in the store was treated much better than us. The guy that helped us didn't stopped bickering with us he went on and on. I was disgusted in the way I was treated just because I am a women doesn't mean I have to be talked down to because that is how I felt. I will never go to that store again.