Pavillion Totalsports lack of customer service

I had a very disgusting experience with the Indian lady(Mary) who was a floor manager yesterdày 27/01/2020. Without trying to understand where I'm coming from my fustrations after going up and down for 1 item I bought from Totalsports pavillion she talked to the guy who was trying to help me saying I'm unreasonable customer. After finding a courage to talk to me she asked if it was their fault that I chose that product? Why do they have it in the shop if the customers are not supposed to buy it. Again she said the problem is between me and the manufacturer not with Totalsports, again my question is why are they allowed that manufacturer to the shop if they don't want to deal with them and customers. That woman didn't have a good attitude let alone the managerial s****. I wonder how she got that job?