I need advices from you guys,
What is the cheapest plan among all telco for both internet + call/sms?

My 'Cheap' is as in, cheapest monthly fee every month.
Which means with minimum usage of data.
I will not exceed the cap, I just want to be able to browse net WHENEVER I need to, but with minimum amount of money paid each month.

once again, please assume I'm having minimum usage without exceed the cap.