Undermining and rudely interrupted to step outside the bank

Firstly I thought this bank caters for everyone meaning everyone will be treated with same service. What happened today at 11:01am Jabulani mall was just not fair at all. I was accompanying my friend and set inside (mind you the seats were empty) then Mudise melusi a gentleman there helping out people decided to tell me to leave the bank and wait outside. Only me and not the other people who were also waiting for the peoole they with. I figured its a case of being undermined cause I am young? Please guys do better