You are going to complain about a restaurant where you went .inform to the manager to resolve this issue

Dear, Sir I am writing to complain about the position of your Restaurant's services. Yesterday I went to your restaurant with my husband and I find it most unsatisfactory as well as not well- organized the system of the services. Nevertheless, We had dinner there providing it would be better the previous coming. Also, the table we ordered two days ago had not been cleared when we gone. It was full of unwashed dishes. Thus, We were a little nervous about this situation and waited for almost half an hour. Furthermore, the waiter brought us chicken broth instead of beef. He could have told in advance that the beef soup was over. Moreover, his behavior did not satisfy us. Because, when we told him to replace the fizzy drink with plain water, he told us that he did not have time right now. Admittedly, it was the first time I was unhappy with your restaurant. Also, as a regular client, I hope you will deal with this matter quickly. At the same time, I would suggest that you should increase the number of waiters and the amount of food in case more customer come. Yours faithfully, Sara Beth.