India Rehab Centre — unethical behaviour by volunteer

Address:

New Delhi, Delhi

I got a call on 7th Aug from [protected] asking me for contribution.I told her that she needs to send me an email.She screamed at me saying it was sent on 4th.I was angry and disconnected the phone.She sent me messages saying I will be cursed by the parents of the burn victim.I finally contributed some 1000 ruppes today after speaking to one Ram Aggrawal.Immediately after that I get a call from [protected] urging me to pay more as more money is required.I said I cannot and disconnected the phone.He kept calling me 2-3 times again but I did not pick up the phone.

Is this NGO running an extortion racket or something.How can volunteers talk like this. Isn't it my prerogative to give as much as want, and I can choose not to give?How can I take action against this NGO?