[pja]

Nope, it's not Wallet doing the blocking (at least not in my case): it was the banks which had issued the credit cards in question.

I've had it happen before, but that was when I'd bought a small pile of cheap Android Apps & then gone to buy something expensive elsewhere (not via Google Wallet) and those transactions triggered the fraud checks, not entirely unreasonably even if it was a little annoying at the time.

Having my cards blocked because Google is issuing fake test transactions for no good reason whatsoever that I can see is somewhat more annoying however!

[alvarosm]

In the cases I was talking about, it was Google. They don't even attempt to charge the cards until a certain period of time (1 hour or so? more than the 15-minute refund period anyway) has passed, so the cancellations happen before any attempt to charge the card, so it's Google, not the banks.

[pja]

Sure: just to clarify, I was only talking about my specific transaction there.

Clearly, Google can and will manage to make a craptacular mess of handling payments for other people in whatever ingenious ways they can come up with!