How to stop subscribe BIS celcom prepaid ~ Malaysia

Hye friends, last month i have buy a blackberry smartphone. Then, ofcourse i need to choose the best one service provider for blackberry internet service (BIS). After i make some research, i choose to use celcom prepaid. I can subscribe BIS for daily, weekly or montly. So i choose for weekly subscribe (RM8.00), because i want to know first is it really good or not.

After 1 week, i make decision for stop the service. Very hard to find method to stop subscribing. I try and error some code, and find this:

Sent sms to : 28882
Type this : BB OFF

Next step, sent it.

Wait for a minute, you will get message inform your :

You have successfully unsubscribed to BlackBerry svc. To subscribe again, type BB ON & send to 28882

That's all. Thanks you and good luck. ;)