Regarding spam calls about the share market :
Now I am sure that some broker is leaking out the phone numbers.
A few minutes ago I got a phone call from +917389904133, some guy called Sharma from some Research Company in Indore. I got into a verbal fight with him and a bit abusive too. In the heat of the moment he let slip out that he got my phone number from my broker.
I think we all need to keep vigilant about this. I think that I will save these phone numbers now and finally report them to the police some time.