Call/SMS blockers that ACTUALLY work?

[Boaz65]

I have been trying to find a WORKING call/sms blocker app that works on my Evo. I've tried a coupple of the free ones that were found in the market but none of them seem to block anything at all! I'm certain that I set them up correctly but calls and texts from those that I tried to block are still coming through. Any recommended apps either free or paid that really work on this phone?

Thanks for "yinz" help!.... it's a Pittsburgh thing ; )