Punjab And Sind Bank — Rejection of loan proposal without any reason

I was assured by branch manager of gohana branch, Punjab and Sind bank that my loan would be sanctioned and you can purchase machinery and setup your plant but at time of sanction branch manager told us to first buy an insurance policy of 50000 than only mu loan would be sanctioned . Due to corona situation and lockdown I was not in a condition to buy that insurance policy, she didnt sanction my loan and I have no where to go as I bought machinery on credit. Also she said that it's her sole decision whether to sanction or reject any laon proposal Although all my papers are complete . Please help, Take action against branch manager and sanction my loan as soon as possible.