Someone up top mentioned a rejection hotline which I thought was genius. I found 7722574501 which is the Rick Astley "RickRoll'd" hotline. Free to use. I've only had Voipo for a week and put 5 numbers on it already.

Thank you Voipo ATT had a blacklist service that cost $5 a month. You could only have 10 numbers on it at a time. Uh, no thanks.