Seriously, so if you deposit your money then they decide what you can use it for.
Check it out:

International bank HSBC has been restricting its customers from withdrawing large sums of cash if they can’t provide a good enough reason for why they need it.

The policy was brought in to effect in November 2013 , but customers were not notified of it. The rule was uncovered after the BBC’s “Money Box” program began investigating complaints by customers that they were being refused access to their accounts unless they could demonstrate a need for their money.