Airtel — broadband advance not refunded

I paid 2475 as 3 month advance for airtel broadband but was later told that the service is not available in my area. The agent, mr yogendra, phone number - [protected] stopped picking up my calls. I had to call the customer care to find out what the issue was. Is there no action possible against such agents who take the money and don't even pick up calls. I have wasted enough of my time on this # yogendra. Please someone responsible from airtel, help me get my money back and take some action against worthless agents like yogendra. Seriously thieves are better