Better Working Enverioment in the USPS

As a mail man we work (carriers) and hostil enveroiment created from management everyday ,it's (bulling) like in the school , management it's over powered and nothing has been done not matter what we do, using our union or not its the same. We are regular people , who has kids and family like everybody else and it's not good to bring all the stress,angry to our house please do something about it. Nobody know how its working inside of Post Office . its that why a lot people quit, got sick or kill themselves ,a lot pressure inside I hope you help us.