In airtel, alcarte channels deducted upfront for 30 days, u cannot remove it for 30 days and no refund if u wrongly activated, and broadcaster bouquets not available only airtel packs available in airtel dth, airtel looting by locking alacarte channels and no broadcasters bouquet, and 20 ₹ reconnection charges every time your recharge ends, new buyers consider this before buy airtel dth as airtel has lot of hidden charges but other dth have no such hidden charges
U can always request Airtel Digital TV to refund charges if u have added a channel by mistake....also they refund Late / Idle Maintenance Fee if u reach out to them.
Every operator has different policies to run a successful business which includes combination of providing good services and catering to needs of all customers + maximise revenue generation so ur statement that Airtel Digital TV is "looting" is baseless and totally false...all such charges r clearly listed on their app / website or u can call/ send mail to them to know about such charges while buying new connection or later on