Some vacation scammers claiming we had '1600 credits' toward a vacation to someplace.  Told her that we didn't do business with criminals, were on the federal do-not-call registry, and that we did not want to ever hear from them again.  Faked Caller-ID to look like a local call, yet she stated they were a travel agency in Florida.  Never gave her name or the company name.  Number added to Ooma blacklist.