It's against TRAI rules bro. Like that even DTH operators can give own customized packs not charging NCF. But it's against TRAI order.
Once TRAI does their auditing all these things will stop.
TRAI has not disallowed operators from charging 0 NCF. Operators r free to not have NCF but there is no one willing to let go profit. If i remember correctly Tata Sky was trying to get initial NCF slab value increased or i guess objected to current ceiling limit placed on initial slab.