A guy named Corey called our business asking for a specific person saying that it was in regard to our account. I asked him what company he was with and he still answered it was in regard to an account.  I could not get him to tell me what account he was calling in regard to or what company he was with.  He eventually realized he wasn't going to get through until he answered my questions and hung up.  If he had been working for a legit company he would have just told me where he was from and what it was in regard to. He would have probably been upfront about it too without me even having to ask questions.