....please DON'T resend your same query over and over. We have passed. Case closed.
....please DON'T tell us off and curse our names. At least not in a Reply email to us. It just puts you on our black list.
...please DON'T send the same query with a different title. More often than not, we remember. And it's annoying.
Now, when your query has been rejected...
...please DO give yourself a few moments to be bummed out. No one likes to be rejected and we all face it in this industry at every level. It sucks.
...please DO query us with future projects if you think they are appropriate for our list.
...please DO file it away and just keep writing. Every writer I've ever worked with has been rejected!
That is all. :-)