Consumer Redressal

I have applied for broadband connection to Airtel in Mar2013 with deposit 500rs. During applying they said, they can give connection in one week.But they unable to provide for 2 months. Then I applied for cancel my application and for my deposit 500.Till now, my problem is resolved and when i raise ticket tey are closing without resolving. Still they are not confirming when I can get back my deposit.