India Rehab Center — forceful donation and misbehavior

Got a call at from [protected] at 13:47 and a girl was on the other side asking for donation. I said i am busy and hung up. At 13:48 i got a sms from the same number saying "shame on you", to which i replied "shame on you guys". On that, i got a reply "shut up".
Earlier also i have been getting calls like this.
Requesting you to kindly take action action the same and save people like us from such harassment.