MakeMyTrip India — No refund and no proper response.

Website:

makemytrip.com

MakeMyTrip ID: NR[protected]
Very bad experience with make my trip. I have booked 4 tickets for duronto express on 21/9 (HYDERABAD to VISHAKAPATNAM ) and travel date was 24/Sep which costed me Rs.8840.76 including all the taxes.
On 22/Sep I have cancelled one ticket through call and customer care executive told one ticket would be Rs.2210 and i would be getting only Rs.1960 that will be reflected back in your account in 7 days but i didn't receive a penny till 14/Sep.
So I have called again on 14 October and the executive by name Anchal has told me the amount would be refunded with in 14 days citing the reason as bank cycle. I was not satisfied with her answer and have requested her to transfer the call to a senior executive for which she replied saying that make my trip would be calling back with in 2 hrs.
I have waited for some time and again called back to the customer care this time the customer executive says Rs.210 has been processed to your account and the remaining amount(Rs.1750) will be processed to your account with in 3 to 5 working days. So i Have asked him why are your processing the refund amount 2 times. He replied back saying that is a technical issue . So I have asked him to transfer the call again to a senior executive he replied back saying that the executives are busy and if there is any another issue he could help me with.
I'm also been charging with credit interest already. I am thinking to take this action legally, and complaining this to make my trip.