Indian Railway Catering & Tourism Corporation [IRCTC] — Less refund of cancelled ticket

Address:

411021

I booked my and my wife's ticket from indore to pune on 8 july 2016 which was under rac. the pnr number for the same is [protected] and total fare rs. 1490/-. i cancelled my wife's ticket on 4 july 2016 having same pnr where i got the refund of rs. 620/- however when i cancelled my ticket having same pnr on 5 july 2016 i got the refund of rs. 740/- i may mentioned that both tickets were booked under senior citizen quota. i fail to understand that how i got less amount when i cancelled the ticket one day earlier.
Even refund of rs. 495/- on pnr no [protected] (confirmed ticket) cancelled on 4 july 2016 before 24 hours of leaving the train was less. (total fare for two persons being rs.1490/-)

Pl solve the complaint.

V. l. phadke