My bank paid too much money into my account then took it back are they allowed to do this without my consent.?

I claimed £2500 of unfair bank charges and my bank refunded the money twice. they spotted the mistake straight away and corrected it. can the bank withdraw the money without my consent. i thought once money entered your account it belonged to you and they couldnt touch it without your permission.
Answer
They can take it back. you have a duty to report any money entering your bank account that you are not entitled to, and not doing this and spending the money is theft (and people do do this and get sent to prison for it). if the bank have paid you more than they should, they have every right to take it back, however you will get to keep the interest the money earns while the overpayment is in your account.