What is the meaning in chinese for the following sentences?

My worst shopping experience was at the summer sales with my daughter. We chose some T-shirts and blouses and took them to the checkout counter. There was a long queue. When our turn came and I laid out the clothes, I noticed that the prices were all wrong. It seems that somone had priced all the items incorrectly. When I started questioning the prices, the checkout cashier made a face , and then she started suggesting that my 10-year-old daughter much have changed the prices! I was paralysed with anger, but I kept cool and just paid for the items at the wrong price and left the store. But I never went back.

What is the meaning in chinese for the following sentences?
1. when our turn came and I laid out the clothes
2. the cashier made a face