browsing further on the details of the bill, I found out that the usage of 3G Data usage is accumulated to half of the bills. Then I tried to call CELCOM to stop the WAP Browsing and data usage from my Postpaid plan. the operator said there are no such service what I can do is only to turn off the internet or data usage option from my own phone.
for Blackberry users, the steps to do so is :
2) Mobile Network
3) Data Service (OFF)
I am in the middle of cutting off all my unnecessary spending and save more , thus things like this is really to strike through from the account book.