No banks doesn't deal with bitcoin because bitcoin is still not considered as legal money in our country so till now no banks accept bitcoin. but banks are making themself ready for future with such own currency.
The banks are making ready but they are not taking bitcoin into their system but they are only focused on the blockchain technology since they are also planning to create a digital currency of their own which is centralized. But I believe that if bitcoin will be widely adopted the banks have no choice but to create a scheme wherein bitcoins is included.