Unsolicited text messages without an opt out are actually illegal as Nokia found out. If anyone really wants to do something about it if they think it is SPAM which really it is, you can report it by forwarding to ACMA (Australian Communications and Media Authority) with the number contained on the second link.
http://tech2.in.com/news/general/aus...ge-spam/275722
http://www.heraldsun.com.au/technolo...-1226252089341