Telemarketing.  Trying to sell testosterone booster supplements.  They've been calling from many other numbers as well from multiple states, guessing their caller id is spoofed.  When I asked to be taken off their call list the caller states that is the supervisor's decision, not theirs to make.
Some other numbers they've used:
303-440-6400
303-442-5400
305-770-4400
312-440-6800
323-440-6200
424-334-5500
424-337-5500
714-622-3400
801-440-3400
801-442-3200
801-442-3300
801-442-3400
949-332-4400
815-821-6349  This number is trying to sell 'male enhancement' supplements but the call structure is the same.