Indian Railways — excess charge on ticket booking for same distance in two tickets by showing excess distance on both tickets

Address:

Shahdol, Madhya Pradesh, 484001

I have purchased two tickets from reservation counter shahdol for shahdol to bhagalpur on 14 nov.17and return bhagalpur to shahdol on 18 nov.2017 for 5 passengers out of which myself is sr. Citizen. The pnr of onward journey is[protected] paid amount ₹2620/ by credit card, showing distance 1275 km via katni murwara by utkal exp and katni jn to bhagalpur by train no 12336.
Pnr of return journey is[protected] paid amount ₹2125/ again by card.in ticket distance shown 990 km. This return journey is bhagalpur to allahabad by brahmaputra mail train no.14055 and allahabad to shahdol by train no 18206.
Amount charged at the counter for onward and return journey is having difference of ₹495/ out of which ₹150/ is superfast charge in onward ticket, and net ₹345/ is extra charged to me and that is refundable to me in my card account.
This is all about my complaint. My contact detail is as under...
Name... Ram naresh gupta, (Banks retd. Officer)
Add. Opp. Polytechnic college, pandav nagar, shahdol m. P. 484001
Mob. No. [protected]
Email. [protected]@gmail.com