I searched around and saw this link that described my issue. Apparently google has authorization to credit and debit our credit cards at will. They also do not bother to email you to let you know what is going on. And of course, no google customer service.
It also turns out that my debits and credits are not identical as the exchange rates vary and perhaps credit card fees occured. So I am either a bit up or down. Merry fucking christmas google.
What principle exactly? You had an accident that (minimally) affected me, so I'm going to charge you for it? I could understand if it was something major, but for the hypothetical dollar, really?
(And yes, I got it reversed eventually, and then had to pick another fight to get them to credit me the difference in exchange rates in the meantime. All this because Jet's shiny new booking engine apparently didn't multithread too well and replaced my $300 tickets with somebody else's... longer version of story here: http://www.flyertalk.com/forum/other-asian-australian-south-...)
It ends up being a lot more complicated than that (as everything in banking is), but that is the general idea.
Probably less than $10,000. And probably not enough to be worth fleeing to a safe haven for since the plane tickets and one week in a hotel will cost approximately that.
""" Dear AdMob Developer,
Last week, we wrote to let you know that on December 19th 2013 we would initiate refunds to you for unused legacy AdMob advertising credits. Today we are writing to let know that between December 19th and 20th we inadvertently processed refunds for more than your unused balance. In some cases, customers will see multiple refund amounts on their bank card statement.
To correct this error, we have reversed these incorrect refunds with corresponding transactions for the same amount(s). These corrections have been processed on December 23rd and December 24th to the same bank card that the initial refund(s) was processed to. This means that you will see one negative and one positive transaction on your card statement for each refund made in error. These transactions will have “GOOGLE*ADMOB” as the description for the credits.
We will be processing the correct refund in early January 2014 for the correct amount owed to you. You will see a separate transaction for this refund amount on your January or February bank card statement.
We apologize for any inconvenience this may have caused you.
If you have any questions about this communication please check out our FAQ’s linked here.
Sincerely, The Google AdMob Team """
I feel bad for all those affected knowing that there's virtually no way to get any kind of customer service from Google.