I've been repeatedly getting calls from this number and a California number claiming to be windows support telling me my computer is giving off an error code. The only windows computer I use is my work computer which is not associated with my cell phone number they are calling. I have asked repeatedly to be put on the do not call list and they insist on me telling them my computer serial number. They are argumentative and rude and when I tell them I am going to report them to the police they say "go ahead" and hang up. They won't stop calling.