India Post — RD amount paid payment

Address: 473112

Sir,
I am Nirmala Jajme have opened RD a/c in Gail Vijaipur complex dist Guna mp in Jan 2012 . payment per month was Rs 10000 per month & up to December 2017 I have paid every month as per terms & condition of post office. I have submitted maturity claim in Jan 2017 but maturity claim processed under premature & no such information given to me that the post office processing the same in premature contion I don't any information. Rs 658000 paid online which is I could not understand under which calculation post office processed the claim .I have seen online calculator which showing Rs 738640 something. What I will do now post master not listening any think & just telling he will not any thing