there is a app called mr.number  that allows you to block unwanted calls from coming thru to ur cell ... if you have an android phone go to the market app and look for it...install it and add all the unwanted area codes/numbers...

stop calling my phone with your spamming a**!!!!!!!!!! you are forever blocked!!!!!!!!!!!

I have changed my cell number in february, and since then I have been receiving advertisement from that one phone number via text, I ask that person to stop, and he simply told me to shup up and get my name of the list I signed up, which I never did...was probably the person who had that phone number before me.
Now he's being rude and kind of threating, telling me it is my last chance...for what exactly, I dont know.
I want this kind of people to stop bothering people like me.