Airtel — Sexual Harassment over WhatsApp call

Today i received a call from an unknown caller on what's app luring me to have video sex with her .. she called me and started recording her screen..i got little carried away however once the call got disconnected she started to harass me stating that she is going to upload the video on multiple channels .. and demanded 11k from me .. i objected and told her to do whatever she wants .. she said by tomorrow morning all the channels would have my video .. she also has my WhatsApp photograph .. please suggest what to do i have the number and her video as well as suddenly i remembered to record my screen as well