Poor service

I went to P 'n P Northgate on Sunday morning, (as I always do for convenience and the staff are usually very friendly) just to be very disappointed. I only went to get 5 items, but since the 'Up to 10 items queue was very long with only one cashier working there, I decided to go to the normal tills. There was a gentleman standing infront of me with a full trolley, but I still thought it would go quicker than the '10 items' queue. The gentleman infront of me saw that I had very littlittle stuff and told me to go ahead of him, I asked if he was sure and he said yes. I was holding all of my groceries in my arms, standing right in front of the cashier. She ignored me ond proceeded to start scanning the gentleman's items. He told her I was infront of him, she answered to me that there is a till for less than 10 items. I told her that it was full and that I did not want to stand there. She did not speak to me for the rest of the transaction and made me feel terrible with her bad attitude. To be quite honest, I doubt that I will go back to this P'n P due to their poor customer service!