Please correct my writing and is it right to say like that?

I hope this helps. Keep up the good work

I was going to the fast food restaurant yesterday and I wanted to have six pieces of chicken tenders. So I said, "Can I have six pieces of chicken tenders?" The server said "We don't have six pieces of chicken tenders on our menu. We have only four or three pieces of chicken tenders." I thought she was a real hardhead. So, I said, "If so, can I have 2 orders of three pieces of chicken tenders?"

In English, we say something, but tell someone. Here are three examples that should help:

I said (that) I wanted six chicken tenders. 

I said to the server that I wanted six chicken tenders. 

I told the server (that) I wanted six chicken tenders.