Currently Being ModeratedMar 16, 2013 1:33 PM (in response to daviDHVideo)
Only a carrier can block calls/SMS's. There is no other way to do so. If you're in the US, and are getting SPAM messages, such is illegal. Forward the message to 7726.
Currently Being ModeratedMar 16, 2013 1:39 PM (in response to daviDHVideo)
My Verizon plan allows me to block, at no extra charge, up to five numbers for 90 days. I've done that twice and by the time the 90 days was up whoever had the blocked number musts have given up trying. But it they call again I'll block them again.
Blocking like this is done via my verizon.com.
Permanently blocking a number requires an additional fee of $4.99 a month.
All blocking is done by the carrier and not on your phone.