Mumbai-Since Thursday, people in the city have been facing grave difficulties in bank transactions.There are long queues outside banks and after waiting for four or five hours, people have still been going home empty handed due to various reasons. Mumbai Congress president Sanjay Nirupam visited some banks in Mumbai to observe the situation.He has requested union finance minister Arun Jaitley to ensure that banks in the city should operate post 6 pm for the next few days for the benefit of office goers.