Originally Posted by GBOAC

Had a modest amount of avios credited from booking.com a couple of months ago.
Today I got an email saying booking.com have corrected the price of the booking, and the new award is 20x the original one (quite a sizable amount of avios!. The price booking.com have quoted is nowhere near what I paid (several thousand pounds), but now had an email this has been approved and will appear in my BAEC account in the next 24hrs.
I presume if/when someone realises the error they could be removed again. What is the time I have to wait before I can safely spend them?!
I'm certainly not going to flag this, as it is a bankers error in my favour!

What a complete mess.
Unless my account has been hacked. I've just checked my booking.com account and there are no strange bookings on there. Similarly my BAEC account doesn't seem to have been fiddled with, and the 'correction' does refer to a valid booking.