> This is a done with a transaction called a "withdrawal."

Yes, but…

Just Google “large withdrawal problem”

Or just read this: https://www.theguardian.com/money/2015/sep/12/big-cash-withd...

It depends who you are and where you are, but there’s no doubt that bank customers often have sudden, expensive, unexplained hold-ups in their attempts to withdraw. Sometimes, even for tiny amounts of very low 4 figures even. It can be terribly inconvenient.

It’s annoying, but you can ameliorate withdrawal bank hitches by advising the bank in advance of your plans. But if you don’t confirm it first, then do not expect to roll up at your bank and be handed $10,000 without hassle. Especially if you didn’t do it before.

This is NOT usually an issue of banks being frightened of a bank run, like some folks are guessing here.

It mostly is the bank’s low-level staff concern that a scam is in progress, that you are an idiot being cheated, and their fear that the bank will be liable and have to pay for your loss.