Indian Post — NSC maturity not accepting

Address:

Mumbai City, Maharashtra, 400067

I have NSC certificate with maturity date 27th jan 2017. I took off from office submit certificate to GPO fort office. they instructed me to submit near by post office, and as I am working they instructed me to hand over a authority letter along with dully identity proof to family member. My dad is senior citizen and he went to submit it to Hindustan Nakka Post office. the post master there was too rude and dnt bother to answer any of the query and din't accept any thing. and asked for money for work being get done. Is this a DIGITAL INDIA. were senior citizen has to rush from office to office for paper work with out getting help.