OkCupid/Telegram Sextortion scam

F(24) I was on a random chat with someone i met on OkCupid 2 days ago. We exchange names and proceed to Telegram. Today We ended up doing a video call. My face is seen, and it's, I think, a 10 minute video. I feel fucking stupid. After a while they sent me a message saying they’d leak everything and threatened to take it and share it with my family and friends. They got screenshots of my Facebook Account, my friends list and even my parents' account with their friends. They told me to send some money, and like an idiot, I believed them, but they keep asking for more money. They also told me not to block them until May10. Why, i don't know why, and they still keep asking for nudes while promising to delete my information after i send it. I’m freaking out rn. I locked my facebook and Instagram. I still did not block them on telegram because I'm afraid they will communicate with my family and friends.