Regarding harassment in the form of work in bank

Good evening I am suresh. M, working as a lecturer. My wife working as a bank employee ( S.W.O- single window operator) in a PSB. From one year she is struggling from internal politics in the branch. After coming from bank every day she felt very depressed. After asking many times she told some caste based differences are playing by her deputy manager. Her branch is having another SWO, a head chashier, an accoutant (Deputy manager) and a branch manager NO field officer( loan officer). Lack of loan officers the superior authorities didn't appointed loan section officer in her branch. Branch manager asked my wife to help some of the loan section work, She agreed to help because lack of loan officer in the branch. Deputy manager is creating so much pressure to do general work (that means RTGS, NEFT, Pass book printings, TDR/TDS, DD,BC Issue, Internet banking kits, locker rents, vendor payments) also along with loan work. she told to deputy manager that is very difficult to manage please share some work to other SWO person which she do cash only. On that day both deputy manager and another SWO were discussed in phone after working hours about my wife asked to share some work to her. next day that madam indirectly shouted in the branch " sharings will not be entertained. If any body felt the work is heavy they has to make pending and to do the next day" like that. Later a month of time my wife is realized both are belongs to same caste. I suggested to explain the situations and conditions are happening in the branch to the branch manager, he is also not bothering. She told so many times to employes union, but no response. Then i realized all are same type only, and one more thing these people playing jokes and comments on my wife when she is absent. The deputy manager also creating rumors at manager like my wife is fearsome of work and she is not doing any work. These things came out by sub staff (punes, safai karmacharis) told to me. please suggest what i have to do. like this happenings creating so much disturbances. I want to complaint to superior authorities, but who will listen all these things, why beacuse all are officers, they will protect themselves and their unions. my mail is [deleted]