Anxiety about making a prank call.

I am a young man living in India and this afternoon I sort of prank called an escort whose profile I saw online. (She is a complete stranger and does not know me.) I asked what is her donation?,to which she answered 12,000 and I asked if she could bring it down to 200 (Yes two hundred) to sort of prank her. That is all I said.She got enraged and began hurling a bunch of expletives at me and threatened she would track me down, find me and screw me up bla bla bla bla....since my cellphone number has turned up on her caller ID .

After about 10 minutes I got a bit nervous and called back again and apologizde but she was still enraged and threatened me that she and her "Friend" would get back at me as she does not like people fooling around and then she hung up at once.(This was the first time and the last time I made a prank call to her. I have never prank called her before...)

I am feeling nervous and scared at this moment.Should I worry? Do you think she would go and file a police complaint? My intuition tells me that she wont as this is pretty common in India and happens quite often to escorts who posts ads online and making a police complaint is too much of a hassle for such a petty thing. Plus she herself would get in trouble as escorting is illegal in India.

I did a quick search for her on Facebook and it turns out that a few months back she made public another man's FB profile (who prank called her) and his cellphone number on her FB wall to sort of defame him....

I do not have any sort of FB account or Photos on Whatsapp etc associated with my cell number so I am not worried much about her doing a google search on my cell phone number to track me and do the same to me. And service providers here in India would not reveal any private details of their subscribers to the general public.

Should I change my phone number? Any advise?