Lettucebee, I sympathize with your situation. You may have found one of the threads I started when you did your forum history search for MyBitcoin-related threads. I've had various problems with them over the last 8 months. I don't really believe the owner/operator of the site is trying to scam people though. He's probably just overwhelmed with the level of work required to maintain a free site. I've suggested that there is a market opportunity for a fee-for-service version of MyBitcoin. Maybe make it free to hold personal wallets but charge businesses for the API. At any rate, I hope you recover your coins.
I'd buy this if it hadn't already been 4 weeks since Mt. Gox, with no new statement as to how they'll fix this.