It's Diversified Consultants, some kind of debt collector. They call the house from various number, but leave no messages. My call-back is always auto-answered by a recording identifying them as "Diversified Consultants," but their caller id does not identify them at all.

This is apparently a bill collection for whomever had this number before us. We've been getting lots of calls from these scammers since the very day we got this new number, in January.  

Their numbers include (so far):

844-287-0003
817-522-3617
817-984-4131
817-789-6038
817-945-3058
817-900-9253
817-900-9262