Terrible service

I went to ackermans today the scotsville branch to exchange the clothes that I had bought earlier this week from another branch. T didn't have the receipt with me I didn't think t would be such a big deal because I am an account holder and I've exchanged clothes before. So when I got there I told the lady what I had come to do, the lady who was standing next to her Jullian I'm told she's the manager responded we don't do credit or returns without a slip and she carried on with what she was doing no further explanations none whatsovet. Since when does ackermans doesn't do exchanges. As I was leaving the shop with the clothes I asked one of the staff if this is true, he said they do a call up receipt on the system if you don't have a receipt. So I left with my clothes without assistance thanks to the so called manager. I'll have to take my clothes for an exchange to another branch. Sooooo angry.