There are no banks who accept bitcoin, but with the majority of banks you can withdraw money to an exchange and buy bitcoin.
I use kraken and when i want to buy bitcoins i just iniatiate a SEPA transfer and voila i can buy bitcoin.
yes, i think that is impossible to happen that bank will accept bitcoin. But you dont need to worry because if you want to still bank you just need to convert it first into other type of money bank will accept. there are many exchanger that you can use for it.