将以下短文中的语法和拼写错误进行纠正，确保其连贯和正确性。输出更正后的短文。


Dear sir, 
I am writting to complain about the poor servise I\’ve received at your restaurant last Saturday. The food was cold and not tasty, and the waiters were slow and impolite. I hope that you can address the issues and take measures to ensure that all customers can have a pleasant dining experience. I am looking forward to your reply.
Dear sir, 

I am writing to complain about the poor service I've received at your restaurant last Saturday. The food was cold and not tasty, and the waiters were slow and impolite. I hope that you can address the issues and take measures to ensure that all customers can have a pleasant dining experience. I am looking forward to your reply.