These scammers just called my phone. They told me that my personal information has been compromised and that I need to call them to get it back. They claim to be Microsoft.
1-818-584-7165 I'm not certain if it works with FireRTC or not.
EDIT: I'm pretty sure that the number was set up very recently and they may still be binge-calling people, so the number may be busy for a little while.
EDIT 2: The number displays "SIP failure code" on firertc, could be down.