What's scary is their response: "Please keep the extra $100"
How many people haven't reported surplus deposits? Where is the "extra" money coming from? The OP's issue likely stems from poor systems and management giving away too much money. Incredible.
This is interesting. I've never had this kind of results with MtGox. They have been very supportive.
A while back I made a deposit for $100 at my local bank to be credited to my MtGox account. When it was credited, they made a mistake and credited $200. I quickly emailed them and pointed out the error. They emailed me back and told me to keep the extra $100. I call that great service.
You can see a screen shot of the email from them at: http://i739.photobucket.com/albums/xx35/plogank/Deposit.jpg
Hope you get your problem resolved.
A while back I made a deposit for $100 at my local bank to be credited to my MtGox account. When it was credited, they made a mistake and credited $200. I quickly emailed them and pointed out the error. They emailed me back and told me to keep the extra $100. I call that great service.
You can see a screen shot of the email from them at: http://i739.photobucket.com/albums/xx35/plogank/Deposit.jpg
Hope you get your problem resolved.