Yes, they are a real nuisance, I have had calls from these people from 5 different numbers now...I never pick up calls anymore unless I know the number, I check online then block them.
I keep getting calls from "Go Green Initiative". I have asked that my cell be removed from their list. However, the individual felt it was appropriate to just disconnect me without even a response or apology.
I just got another call from the Go Green Campaign. I keep asking them to remove my number from their list, and I keep blocking their number, but they keep using different numbers. I asked today's caller to remove me from the list, and she just hung up on me!