Originally Posted by
Brugge
I don't know the answer to that, but the letter explicitly mentions the size of the loads, so apparently they do care.
The still open question is if the OP was doing BP, or maybe ATM withdrawals, which brings up the suspicion of money laundering.
They merely mention that the size of the loads and quick withdrawals match. I doubt the loads were what brought poster to their attention, though. I think most people would just naturally load in even amounts, although likely smaller than $1000.