Forward the text to 7726:

Security company Cloudmark created a spam messaging reporting service that nation?s major wireless carriers agreed earlier this year to start using. Now, customers of AT&T Mobility, Verizon Wireless, T-Mobile, Sprint and others can forward their text spam message to 7726. The mobile phone carrier will ask customers for the phone number that?s linked to the spam message so they and Cloudmark can start investigating.

http://www.ajc.com/news/business/text-spam-messages-on-the-rise/nSW3C

Got the following SMS at 5am!!

Hey Gini, not sure if you or anyone you know still smokes.  But www.nosmoke33.com is giving away free e-cig trials. - Alan

Got a cigarette ad texted to me at 5am from this number