如果您对餐饮服务不满意，可以用以下英文句子进行投诉：

1.I'm sorry to say that I'm not satisfied with the food/service.

3.There was something wrong with the order I received.

4.The food was cold/tasteless/inedible.

6.I was charged for something that I didn't order.

7.I feel like I didn't get value for my money.

8.Can you please refund my money/send someone to talk to me