HOW much??!!!

I'm pissed. I got my heat bill for the month of December and it was $400. WHAT?????? That can't be right. I figure it must be for 2 or 3 months. So I take it into school (our bills are in Korean, so the school takes care of them--they just tell us what we owe) and they said it was right. Well I talked to the other foreign teachers and they don't pay nearly as much in heat, so something must be wrong with mine. I live in a fricking 2 room apartment so it's not like they're heating a palace or something. They sent the heat guy out to check it and he says everything is ok.

Here's the deal---in addition to my thermostat on the wall, which I figured controlled the heat (which I turned to zero everyday before leaving the house)---evidently there is a covered HOLE IN THE WALL that I was supposed to uncover and reach into and turn off these faucet-like things everyday before going to school. WHAT???????????
#1: how the HELL was I supposed to know that?????
#2: heating my 2 ROOM house at a mere 68 degrees constantly for one month is $400????!!!!!!!
#3: what else am I doing wrong??? Am I also supposed to turn my refrigerator off during the day as to save electricity?
#4: Since I didn't get the December bill until the end of January, I did the same exact thing last month, so my January bill will be just as much, if not more!!!!!!!!!!!!!!
Goddammit!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Here are some pictures to let you know that I am really not a moron. My thermostat, and then the hole in the wall that I was supposed to be tampering with.....

Note to self: If I ever live in another country, please check with heating company for correct control-operation. This was an expensive mistake.