Horrible Service

I was standing at lottery counter for about 20 minutes without no 1 assisting. Staff passing me back and fourth no one intending or willing to assist me. Few minutes later white guy came in to join me on the queue but to my surprise one of the staff member who passed me earlier asked this guy if he needs help. I was so shocked and hurt as I was wondering if do I not deserve to be served or even recognized as a customer. I feel that I've been discriminated and...thanks for the pathetic service?