Amazon India — False promise on Promotional Offer

Address:

600004

We purchased Sanyo 49" TV in the month of August 2016.
As per the advertisement in the Times of India and other dailies they are supposed to offer goibibo.com GOCASH offer of Rs.15000/- for the customers who purchased during the offer time.
I had sent around 10 reminders to the customer service department on the above but no any action been taken to resolve the issue in the last 4 months. It is really frustrating to deal with customer care as multiple teams are handling the case and the response to the mails are very standard.
Amazon should have direct escalation chart/mail id of the people so that customers who are facing major problems can be taken and addressed timely.
Hope some action would be taken to resolve the above issue.