Cleartrip - Unable to get refund from cleartrip

I booked my to and fro tickets from Bangalore to Madurai via cleartrip.I had an important meeting in Bangalore on February *th **** and my flight from Madurai to Bangalore on feb *th was canceled by the airlines.I travelled by car from there as the meeting was very important.I spent some **** for the diesel.
From the airlines side they said they have refunded the amount to cleartrip but cleartrip tri is not willing to pay the refund for more than a month even after continuous email conversation.Once they called and spoke to me but the amount is not refunded yet.