How to complain against the returning officer for unfair practice of conduct a Cooperative Bank election process

please guide on the relevant steps to be taken on the scrutiny not done by the returning officer and misguiding on the process.

this is pertaining to the disqualification of directors on relevant grounds that were overlooked

please guide as the selection of the chairman and vice chairman of a co-op bank were done of recent with violation of RBI norms as well as MSCS Act

do guide