WGTdbloshoe: It looks like you purchased a CC Pass today. This would account for the 37 credits being taken from your total.
Unfortunately there is no confirmation button, and many see this as a con. Surely this "feature" should either have a confirmation button or could be disabled if you do not have a free pass.
I too have been caught by this.........I simply refuse to play for a day now - 37 credits off my account.......loss of ball usage for WGT....I win :)