Wow, these guys are just jerks.  They call at least 2-3 times per day if not more.  The caller ID says "Ace 76" and from what I've gathered it's some kind of merchant services provider.  If you check their BBB page they have an "F" rating due to numerous complaints and failure to respond to those complaints.  I used to answer and try my best to be polite, but the person(s) on the other end of the line have become increasingly rude over a short span of time.  I'm seriously about to invest in an air horn I can keep by my desk...  Next time they call they might just regret it.