Generally men are ambassadors. Dish TV had SRK for a long time and later Ranveer. TS had Aamir and Mohanlal for a long time and in 2016 (10th anniversary) Amitabh came on board briefly. ADTV has never had an ambassador (separate from the telecom business where the 4G girl, Sasha Chhetri, is the ambassador).
I would like to see the current crop of actors and actresses (people like Aparshakti, Bhumi and Kriti in Bollywood) promote DTH brands.