GoAir — cancellation refund

I had booked a ticket with Ref. # WZLKTW from Lucknow to Pune travel date July 8, 2017. The ticket was booked on May 30, 2017. They cancelled my ticket on July 7, 2017 because of flight cancellation. This amount has not been credit in my account till August 15th. In the initial few follow ups, they asked me to provide bank account details while showing inability to return the amount on the Credit Card used at the time of booking. When I call at customer care, they just say that it has been transferred and no sign of this amount in my account. My bank also says that there is no amount transferred in my account. There is no response on email as well after repetitive follow ups on [protected]@goair.in.
Appreciate if refund can be processed at earliest.

Thanks