MakeMyTrip India — Unable to get refund of cancelled flight tickets

Hi, it's been more than 3 weeks since I got sms saying cancelled flight refund has been processed with approval code number. But no amount is reflecting in my account.
In order to get more details i have tried calling and send several emails to customer service but it's of no use .
Kindly let me know how should I contact the customer service or any relevant mail id of make my trip company.