Go to FTC or FCC federal government websites and file complaints, those complains result in an investigations and subpenas and eventually - fines to carrier companies and legal issue for the caller company. I see people are not happy with getting calls - DO SOMETHING.
They change Caller IDs every day, to avoid blocking and to make you answer the phone, but all of this is traceable, write down what the number was and what time it was.
Stop telling everyone how upset your are and file complains on FCC, so these guys get $15,000 fines and go out of business.
I get 5 or 6 calls a day from this number. Today I called them. Its a Healthcare scam. They offer you an option to opt out. Claims it will take 72 hours to process your opt out.
Stop Calling - 561-430-4551, I have blocked and re-blocked this number and yet they find a way to call in. These call come in all times of the day it's becoming very annoying.