From my heart: Good luck man. They closed the shop months ago. I don't think they will get back to you and frankly that would add many kudos points to their part from me. But it's not that kind of world and we know it. They have probably spent the funds (all of them) by now.
Good luck from me too, but ...
DeepBit was not one of the first big pools and the only one which passed the 51% for nothing. The pool has closed some time ago and no mining is going on, but the web is still alive for a reason. Users to get their remaining funds is one of those I can think of, so don't give up - try smaller amounts for manual payout or just wait (for me it took more than a week to get my last payout)