Airtel — channel subscription

Address:

Tamil Nadu

dear sir,
This is Nithin from coimbatore,for 1 month we started using Airtel Dth,Intially Tamil channels are broadcasted,for additional channels i subscribed about 5-10 channels,but the problem is now we are receiving only subscribed channels,we are not recieving Tamil channels.so i humble you to solve this problem as soon as possible.
Thank you.