Most banks don't accept bitcoins instead if you want to exchange bitcoins in banks that means you are willing to pay a high amount in bank exchange rates.

Let me tell you the reasons that we have bitcoin exchanges as banks and why you need to verify your account by bank statement,residential proof of address,and your identity documents?…that compliance is used to like you bank account with your exchanger for making deposit transaction,or withdrawal without any problems that's why is called friendly exchanger

So always make sure your wallet verified to easily exchange your bitcoins to currency note without any problems experienced