T-Mobile Informative - Disable Text Messages - Sort Of
Shortly before the lawsuits regarding T-Mobile's text messaging service were announced, I started to receive some stock spam texts. Calling T-Mobile, the representative told me that I should "send an email to the address in the text telling them to stop, and they will."
I had already forwarded the messages to the abuse@ address of the domain in question, and tried to resolve the email addresses. Of course, they were invalid. When I informed the representative of this, and that sending random emails to spammers is a good way to let them know you are really real, she got slightly defensive and muttered, "Well, it has worked for me." Sure.
Anyway, T-Mobile allows you to set up filters to stop certain types of messages. These filters are buried somewhere in your account settings - I can't remember exactly where at the moment. I added a filter that said "If subject of text (doesn't equal) "some 50-character long string of symbols" then discard."
I just hit keys at random until the buffer they provide for the filter keyword was filled up. So far, no new messages. Of course, this also gets rid of any real messages you may want to receive, but I purchased my pre-pay phone for emergency use only and don't care about text messages.
I have to point out that the representative was friendly and willing to give me information, as incorrect as it was. I think it goes without saying, however, that you shouldn't take T-Mobile's bad advice about getting rid of spam texts.