I have lost my job after 7 years of selfless service, what can be done ?

I was working in an office under Ministry of Women, Child Development and Social welfare since 2013 till 2020. There is also sufficient evidence of working and directly depositing salary into my own bank account from the treasury. Day after day certificates of good work have been given to me by all the officers whom I worked during this period. I even have my employee ID. The notification by which I was appointed, hereinafter referred to is not applicable to me, that is their ability to understand when they have paid me salary for a long time. Now I am not allowed to enter the office, the concerned officer has issued a memo to that effect. Where the Hon'ble Supreme Court has given the judgment of 'Same work Same pay', I used to work on nominal salary and now that too is out of hand. Where the Hon'ble Chief Minister of West Bengal is in favor of 60 years benefit in all departments, then I don't know why such injustice was done to me. I would appreciate it if you could let me know what my next steps should be. Thank You.