OK, so I submitted to an agency that says the response time to a query is "up to four weeks" and that they DO respond to EVERY query. Well, it's been six weeks, and haven't heard a peep back. Of course, I worry that something got lost in the mail, or that I forgot to stamp my SASE or something. So I sent a very polite email to the agency asking if perhaps I should resubmit, on the chance that the query or response was lost in the mail. I sent the email three days ago and haven't heard back. What would you do next? Keep waiting? Go ahead and resubmit to the agency? Or just consider it a lost cause and move on to the next?