I was able to catch the charge and dispute it in time to get my money back, but the money wasn't a big deal. It was only $40, but I wasted more than that in the value of the time [2] I spent to get it all straightened out.
You see, it turns out that my bank can't just block these remotely created checks, or even block them from this one single, known, fraudulent [3] source that tried to steal my $40. Instead, they had to close my account and reopen another one. I protested that I knew this was going to either cause a late fee, or I'd miss some random thing that only charged my account infrequently, but the best they could do was keep the account number temporarily active and redirected to my new account number, giving me time to switch things over. And, I ultimately did miss one account when I did my switchovers. Fortunately, I was able to call the company and get it straightened out right away, with no harm done.
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[0]: https://en.wikipedia.org/wiki/Demand_draft
[1]: https://en.wikipedia.org/wiki/Remotely_created_check
[2]: I used this incident as the basis for my claim in the Equifax settlement, which I fully expect to never see a dime from, because big corporations don't suffer consequences when they fail to protect peoples' personal data.
[3]: I was actually able to conclusively prove the entity named on the instrument was completely fraudulent. Law enforcement isn't all that interested in $40 worth of fraud, though, so I'm pretty sure they're out there still doing it.