First of all, Go to MoneyBackCo and join the membership. After that login to your account and search "3 mobile", and then select the deal "3 mobile $64/7.5%", so thant you will get $64 cashback for signing up the $29 Cap Plan online .Click on the link provided and you will be redirected to the 3 online store.
Copy and paste the following URL to your browser
and sign up for the sim only $29cap. Use the promotional code "100special" at the checkout, and you will get $100 credit on your first bill.
After you got your sim card delivered by Australian Express, send me an email at [email protected] and ask me for a referral code, and then Call 3 Customer Care 133320 and tell them your were referred by a friend and give them the referral code, and you will get $25 on your next bill. So there will be $125 credit on you first bill, and if you didn't go over the cap limit, you could enjoy 4 months free 3 mobile service with $150 worth of calls and 200 minutes free 3 to 3 calls. On the 4th month, you will still have $9 credit on your bill, you can stay with them if you were happy with their service or you can just cancel the service and walk away without paying any cancellation fee.
That's another reason why it's good to be 3.
@Blinda: How could they do that? Did you call them for explanation?