There is already a thread for Gregory and Co,
here which you have previously posted in.
The vast majority of AWers are US based, so you may not find anybody else here who is submitting to them.
From their Submissions page:
Did you do that?
Also, Mary Jones is listed on their staff page, so I imagine she's real.
If you've still no joy, try sending from a different email address (maybe even from a different host - if you're using gmail, try a yahoo one), or contact the general info(at) address. Automated systems mess up sometimes.