Apple

It's in China and their telling me to remove it from find my iphone or they'll hack it obvious scam. I been trying to erase it forever it just says pending. If I remove it from icloud does my content stay on the device if the erase never went through? My password is only 4 digits if they have a way to brute force or guess it I have so much personal information they can access. I don't have the setting on that deletes after guessed passwords.