how do people send सवालों to the show?

I don't think आप actually send them directly to the actors.
In the ones I have heard of, the guy conducting the interview (be it directly लोमड़ी, फॉक्स या any guy with a tv, radio show...) ask via his website, twitter and/or फेसबुक at his followers to send him सवालों and he choose which one he will ask.
So आप actually have to stay tuned and send your सवाल to the right person at the right time and hope for the best.