They didn't stole anything, it's just not visible.  If you would even use the search function of this forum once, you would have known.

Cryptsy wasn't prepared for these amounts of users (and trades made), that's why they have a delay in answering (thousands of) tickets and because their servers aren't prepared for this, the website is slow and things like this happen.

I "lost" some BTC and some DigitalCoin due to this, but after I made a few new buy and sell orders regarding these coins, they appeared again in my balances.

Submit a ticket and (eventually) contact BigVern himself through Twitter and you will be allright.   

Next time read the hundreds? of posts regarding these issues before you blame Cryptsy and write that they stole all your money and are a "scam company".