Travolook — Refund of Cancel Ticket

I have booked my flight ticket from Pune to Nagpur

Reference Number : REF[protected]
Ticket was cancelled as they said price get hiked after booking and I was asked to pay extra amount after booking is done. They have given me two option either pay extra amount or cancel ticket and you will get full refund amount. I chosen cancel option and i received email Too.
After calling in customer care, the executive committed that refund to be done within 10 days but after 160 days also I did not received my refund amount.
I tried many times to customer care executive but it takes long time to connect to them. they have given me commitment many times that your payment in process and will be done soon.