GoAir — Regarding cancellation of flight twice

Hi- My PNR detail is EB55TQ. At first, I had booked a ticket for my four family members from Patna to Mumbai having departure time 14.25 and arrival 16.20. DOJ was 21st July. But, you rescheduled the flight and changed the departure to 13.10 and arrival 20.25. Almost 8 hours of journey. I have small kids and I can't go with this long journey. When I complaint, your executive again rescheduled the journey to 22nd July. But, it happened again the same thing and you rescheduled the flight.. This is completely wrong thing and I am literally frustrated.
I have requested for refund in the night but yet I didn't received any cancellation confirmation.
Please refund my amount asap as I have to rebook the flight and I don't have that much amount. Please consider on my request and return my amount at earliest.
But, i would say seeing this instance, no one can trust on you. You have very bad service.
Thanks
Deo Pandey
PNR- EB55TQ
Contact- [protected]
DOJ- 22ND July