Disrespectful and extremely rude staff!!

I’m appalled and gobsmacked at the service I received today. One of the sales ladies was screaming across the till with all her colleagues watching and giggling because she was upset at the fact that I was speaking to my partner saying we can get ink at a cheaper price from a different store. She was extremely rude to a point where she refused to assist me with a price for that ink saying and I quote “I won’t help you! You can go get it wherever you want”. I’m surprised that someone like this deals with customers on a daily basis. She’s extremely arrogant and disrespectful!