Mobikwik — irctc - waiting list ticket cancellation - not refund full

Pnr no [protected]. Train no 16203. Date to journey 29.11.17. Travel from chennai central to tirupathi. 5 members
Total charge 400+6 rs
Amount paid through [protected]@[protected]@510676.
Because of waiting list ticket automatically cancelled.
But mobikwik refund only 100rs
Amount paid through ccav[protected] refund [protected]@493868