MakeMyTrip India — No one is replying or picking calls after taking money booking Id NV8C[protected]

I applied for france visa application assistance and my booking Id is NV8C[protected]. I connected with Prerna.[protected]@makemytrip.com and +[protected]
64 is her given number. I even sent her all the required documents on her email id as she asked and tried contacting multiple times. Now its been more than 7 days but she is not responding to any email and not picking my calls this is not right way of treating customers. Please provide the solution or I will be compelled to visit head office with my problem.

Regards
Gaurav Chugh
+91 [protected]