Reliance Communications — Wanted to cancel my reliance data card number [protected]

Address:	Chennai, Tamil Nadu, 600118
Website:	www.rcom.co.in

Due to 4g upgrade from reliance side we do not have signal in the existing 3g network. This is bull. Am paying for service that reliance is actually promised and now there is no signal in entire area. Am unable to cancel my service too as its been 2 weeks and i cannot reach the cancellation department. Each time they attend my call and they will disconnect the phone such a worst service.
Now all i wanted is to just cancel my service with reliance.
I did not ask for 4g service but due to this i cant use my exisitng connection and in just one moment my datacard will be a trash