GoAir — Full refund for the cancelled flight due to medical emergency

Hi, I cancelled my flight with pnr no. O3S7JL FROM LEH TO BANGALORE ON 12TH OF JULY and ask for the full refund due to medical emergency. They deduct the cancellation charge and refund the rest and ask to sumit the medical reports to get the refund. I submitted the medical reports through mail but after that I keep on calling them to know the status but keep on saying they escalate it and wait for 2days.It has been 15 days calling again and again and their answer is same