Answer:
"Hi, I wanted to talk about the meal I had in your restaurant yesterday.
We'd booked a table for 6 people but when we arrived there weren't any free tables and we had to wait for about 45 minutes till we got the table.
There were only 4 dishes available out of 12 and they were horrible.
The fish specifically tasted so bad and the waiter was so rude about it.
We've eaten in your restaurant several times in the past and this is the first time something like this happened. I don't want a refund but I just want you to improve the quality and service."
Explanation: Sorry if i did something wrong :/