Legitimate organizations don't have "withdrawal limits". What if you went to your bank and they said, sorry you can only withdraw $1000 this week. When you see a withdrawal limit that is usually the precursor to coming back "next week" and finding a lock on the door.
Practically all banks have withdrawal limits.
Actually in many countries they are even obliged to have them, especially for online-withdrawals.
I don't know what planet you live on, but on earth bank accounts are called "demand deposits" because the client can get back ALL funds on DEMAND.
If I walk into my bank in Boston and present them with proper identification they MUST turn over every cent to me in my account on demand or I can sue them for mega damages under state law. That is what a demand deposit is. In fact, if a bank refuses to honor a demand deposit improperly and that causes the holder to suffer a business loss, the bank can be sued for cost + damages, typically DOUBLE what the business loss was.