Jet Airways — refund pending from make my trip against jet airways

Address:

Mumbai City, Maharashtra, 400069

I had booked 3 tickets on 5 february from mumbai to manchester n manchester to jfk return for 10th may 2019 n 19 june 2019 respectively for jet airways from make my trip. I had done the payment thru credit card.
Without my knowledge on 11th april i received a msg saying that our flight was cancelled. I immediately approched jet airways they in turn rescheduled my tickets from mumbai to amsterdam n amsterdam to jfk n return with same dates. But suddenly on 19th april again i received a msg saying your tickets are cancelled and your refund is in process. Till today no refund had been received. It is almost three months. It is our hard money and we should get it on priority. No one is giving proper response. Make my trip team says we have no idea about it when you will get the refund. Almost every week i do the follow-up but no response. My amount is inr 1, 60, 000. Please help me out to resolve the matter at earliest.