>>The number is 193 666 but I can't find any reference to it
>> via google.
>>

> I am still in the process of the finding out more information about
> these companies and highly doubt that they are allowed to keep
> operating the way they are.

You can look these 'premium' SMS numbers up here:
http://www.smsfun.com.au/premium_lookup.php

193666 gives the following output:

Premium Number: 193666
Service Provider: TMG-Company
Campaign Name: Text & Win
Campaign Type: Competition Entry
Campaign Start Date: 02/10/2007 00:01
Campaign End Date: 31/12/2099 23:59
Campaign Description: The service concerns a SMS & WIN trivia game.
After activation user instantly receives the first question. The user
has to SMS his answer to 193666. The user gets 5 questions. However, the
user only gets the next question if he answers the previous question
correctly. If user answers all 5 questions correctly, he will enter the
knockout round and compete with the other remaining contestants. Every
week the user automatically receives the first question of the next round.
Sending Fee: $2.00
Receiving Fee: $2.00
Cust Care Phone: 1300 55 26 06