'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease
If there is no collection of money only play cards and they are asking us to give missed calls means somebody might have promised them for some money for each missed call they get for that NGO. This is also a way of getting money for their work and daily wages to the people who are carrying play cards.
It is about spreading awareness. Not everyone appreciates the efforts of campaigners, but if it is a worthy cause, the awareness spreads. Like minded people join the cause and do their bit. The phone numbers that you mentioned is a way to for people to connect with other people. Once the connection is made, it is easy to recruit more people.
Sometimes, such placard initiatives and protests get picked up by the media. This helps in spreading the concerns to a larger audience. The Government machinery also takes notice and take action.
People who join such campaigns can be either paid to do the job or are there out of choice.
"A love affair with knowledge will never end in heartbreak." -Michael Garrett Marino
A blunt knife or rusted knife can't be useful for anything just for the sake we call it as the knife similar to PayTM series or Sachin or Virat records.