Have called two days in a row now. Left no message either time. Find no records online for it. I found a very similar number ending in 9774 that has bad ratings. So I am guessing this belongs to that one as well. I'd say it's blockable.
Guy called indicated he needed to send compliance forms regarding taxes etc. & tried to act as we have done business with CFO in the past. I advised, we have no records of doing business with CFO and according to the phone number on Google he's a spammer. I advised him of that, and he abruptly hung up. All he could verify was what is readily available online or in the phone book. But he could not verify any previous invoices or any needed info about us.