I finally had enough so called the number back from my office phone. I had to wait for several minutes as I was the "fifth caller in their Que".
I waited for the representative to answer - the company is called Gulf Coast; I requested they remove my mobile number from their listing. After providing the rep with my number (go figure), I was told I would be placed on their 'do not call list'.
I started getting these calls yesterday and have not answered them! But, they are already pretty insistant on getting thru to me, as it's only 9AM and I've gotten two. I'll answer it next time and then hang up. Or, maybe I'll check with Verizon and see if I can put a block on. Thanks for all the info above from people like you! I appreciate it.