Credit Card Problem

Does this make sense

Total Debits $20.41
Total Credits $50.00

Ending Balance $0.36

Also 2 days ago I was trying to buy xbox Live but it kept failing and I got charged 1 dollar everytime?

07/02/2008 11:58 PM MICROSOFT *ONLINE
MICROSOFT *ONLINE
800 386 5550 , WA
Reference: 0000000001065
360100 POSPreAuth POSPreAuth:Checking:NoAccount $1.00

I got that 9 times, its the same price as Xbox live (8.99) yet the purchase failed, I checked my xbox live and the membership wasnt there