Completely Dissatisfied

So on Monday 30th of October I visited the Game store in Jabulane Mall with my Brother he was looking for a phone and I was looking for a smart tv plus a sound bar so there was a lady and a guy by the electronics department when I asked about a tv and sound bar, he gave me an appalling attitude as if I wasn't going to buy, okay fine we proceeded with a phone for my Brother and the lady assisted and asked for my proof of residence I further said I didn't have it with me as a hard copy and asked if I can send it to them via email there and then as proof she than went to go enquire to the same guy that gave us attitude earlier I saw that guy nodding with his head which was a decline, when I pleaded with him he simply said "which means you do not want the phone than" and that's when I decided not to buy anything from them if he would answer a paying customer in that manner I mean I understand its processes but why not tell me in a polite way rather than making me feel so small with my money that I was going to spend, I further got home and decided to buy whatever that I needed online at a different store that way we would not be facing another altercation with rude staff