I was told to go away with my **** money

I was at Shoprite Pta church Street paying my accounts, I was being assisted by Merriam Maluleke, the money market clerk when she told me she can't accept my money as it had stains and that they don't take stained money. I pleaded my case that the money was not **** and she wouldn't take it and told me I am wasting her time as she needed to close of at 6pm. She then called her manager Godfrey Mashele who gave me bad attitude telling me to go away with my **** money. I told him the money wasn't **** as I also got it from other shops and he insisted that I leave as their machine wont accept the money and I asked that he bring the machine to test whether my money was **** or not and he told me I am not special and cannot do that for me. Merriam and other money market clerks were laughing at me and making silly remarks about me in front of other customers. I've never felt so humiliated in my entire life. I just left the store to save myself from some more embarrassment.