Airtel — airtel dth unnecessary charges

Address:	Chennai, Tamil Nadu, 600013
Website:	www.airtel.in

I am using airtel dth for past 2 months. I have activated star vijay hd as offer from airtel in discounted rate. Validity 30 days. I called customer care they said the channel will come continuously even after 30 days and normal rate will be charged after 30days. This is unnecessary charge. The channel should get deactivated after 30 days. When a offer made for channel it should come only for 30 days, if offer continues they can continue the channel or else the channel should get deactivated automatically. Otherwise its a trick use hd channel at higher cost. Please make necessary changes immediately. Thanks