We have the problem,too. This number almost called us every day. And last night at 3:15 AM in the morning and hang up. We have to pay every month to the telephon-company a fee, but have to deal with lot of ads and stupid 305-000-0000 calls. It make us very angry that the telephon-company don't protect us customers from this kind of crap...
I have been getting these calls the past week and I finally decided to pick it up. They tried to sell me something but I didn't care to listen to what, I told them to stop calling me and to take me off of their call list but they claim that they got my number "off the net," assuming they got it on the internet. After my repeated harassment of the woman on the other side of the line, she finally caved and said she'd put me on their No-Return Call list, so let's see how that goes.