My EX Boyfriends New Girlfriend is Stalking, Harassing and now copying me. What do I do?

Long Story short-
Me and my ex broke up in April, i ended the relationship because he was manipulative, controlling and semi abusive. I wanted to get out while i still could, it was a quick breakup and i blocked him on absolutely everything, changed my number and moved states to start fresh. Within 4 days of the break up, he got with a new girl and since then she's done nothing but send death threats, stalk me to a point I've had people following me and send photos of me to me. it died down for a month or so but then was contacted by friends and family that she had followed them all on social media (100+ people) changed her bios / @وحیدیژخمدلهکنا to match mine and is now acting like me. she's gotten the same hair cut, style, hobbies, doing her makeup to match my facial features and even commenting on a family members inactive profile (They passed away in 2015). They both have now made numerous fake accounts to try and talk to me, I've blocked 20+ so far.
Is it worth going to the police? They both live in a different state to me over 3000kms away, both unable to come to my state due to lock down but have publicly shared they are planning to travel to my city when lockdown lifts. I'm uncertain on what to do and have asked for advice but have been told to just block which I've been doing as soon as they try to contact me.
Updates
+1 y
OK for some reason it tagged a andom person, im sorry about that,
My EX Boyfriends New Girlfriend is Stalking, Harassing and now copying me. What do I do?
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