India Post — Denial of service within govt work timings

I am an ex army officer. I visited post office at Rau 453331 at 1545 hrs on 06 jan 2021 for sending a registered post. I was denied the service and reason given was that registered post is only sent from 10 am to 3pm. And I was told to reach post office before 2.30 pm in case I want Registered post to be done. I requested the individuals working there to extend a help as post office is 8kms far from me. They gave an excuse that there system for accepting dak and generating slip is closed by 3pm and then they start despatching procedure. I was bluntly told to go back and come in between 10am to 2.30 pm to get my dak registered for despatch. This is mere disobedience of the work timings . The govt officials can't work on their own whims and fancies and start closing off by 4pm. An action is required to be taken so that other civilians don'ts suffer due to such post office employees.