When I was leaving from Paypal for an issue like yours (they still have 300$ of my money) I investigated on Google Checkout and read a lot of horror stories like yours.
I wish you to solve this and after that I suggest you to switch to Fastspring. They have really excellent customer support, that becomes very valuable when a lot of money are involved.
I wish you to solve this and after that I suggest you to switch to Fastspring. They have really excellent customer support, that becomes very valuable when a lot of money are involved.