Vijaya Hospital — Returned drugs amount not given to patient

Cashless claim no - 474763
Hospital sent claim amount Rs 53309.69 to Niva bupa insurance
Approved insurance amount is Rs 49168
- amount not approved by insurance - Rs 4141
Drugs returned - Rs 2525

Hospital sent all returned drugs/medicines amount to insurance
so here i paid returned drugs/medicines Rs 2525.
i checked with insurance company, they said could not see the retuned drugs details . In hospital, billing section told check with insurance we sent the drugs/medicines to insurance company plz check with them.
In hospital provided 2 High resource protein, amount is 2*949 = 1898, we used 1 box and another one returned to hospital. but i paid for 2 box without consuming, they are not clearing my questions, always saying check with insurance. They reduced returned drugs amount from the insurance approved amount Rs[protected] = 46643, so after this calculation my approved amount is 46643 only not 49168, plz resolve this, i need my returned drugs amount