I pay for net with at&t

I have an apple iPhone with at&t. 

It comes with 1 gb of net automatically. 

I pay an extra 5 dollars for 1 more gb every month. 

The iPhone runs on net. So the first gb that automatically comes with the phone, cost 30 dollars a month on my at&t bill. Can't get out of that. 

If I added 1 more gb for 5 more dollars, it'd cost 40 dollars instead of 35 dollars. 

I'm not connected to wifi or a hotspot. 

I don't feed off my neighbors net. 

I'm not a bum.