Hathway Cable & Datacom — Non refund of excess fee charged by Hathway company

Address:	60096
Website:	hathway.com,hatheway.in

I had recently taken a hathway connection in the month of december 2016 in chennai. During the installation stage when the connection was setup hathway official charged twice for the same transaction.when there technician came to set up the connection. when i asked them he said the transaction will be reverted in 2-3 days in my account .
it has been 3 month repeated mail and sending them bank transaction they have not reverted back with any explanation.