Consistency. Is it too much to ask?

I've got a big question regarding the marking of assignments.  I've just received back an assignment with the comment that I used too many newspaper articles.  The assignment was to pick two topics from a newspaper and write about them.  The only newspaper articles I used were to reference the original article the rest were peer reviewed scientific papers and one website of an environmental organisation where I mentioned the 'environmentalists view'.  Did the tutor even look at my assignment?  I probably lost a point because of that!

That's one thing that I've noticed with the marking of pretty much all my assignments this semester.  It is just so confusing.  I've had teachers write over my graphs with things like 'use 1/3 of a page, bold here, more information, and so on'.  Then for the next assignment I go and fix those things and I get it back with something totally different.  Why can't they just take their time and look at it properly while also being consistent in their marking.  One of the teachers said to be when I questioned the way a question was phrased "you have to look at the question and think about what it mean".  Call me lazy but if I'm in a test I don't want to have to sit and think about what is wanted when the teacher didn't phrase it properly in the first place!  

So far it doesn't look like I'll be doing as well as I did last semester.  It's so frustrating and I'm not the only one who has this happen to.  My classmates tell the same story but only to deaf ears.  I don't know... tut tut tut.