I argued with a locksmith recently who said my front door lock was "unpickable" and the only solution would be drilling it and replacing the lock. I told him I'd pay him 70 dollars cash to pick it or he could leave and I'd pay nothing. He picked it in a minute or less and that was that.
Since he acted like a reasonable (rational) person he probably wasn't a scammer, but it's worth mentioning that there are locksmith scammers who take advantage of people in high-need situations to charge them exorbitant amounts for "unpickable" locks that always need to be drilled.
The Reply All podcast covered this a few years ago with "Very Quickly to the Drill" [1]