Unfriendly professors

[STG]

I started Capstone I in the beginning of the Spring Semester in January. It consists of 4 topics: Marxism,Technology, Affect and Imperialism. My first paper was due 2 weeks and the 2nd is due next Tuesday. I told the professor the first day of class that I will be overseas for the month of April and that I won't be in school on the day the 4th paper is due so he told me I should hand it in early. Last week I figured I might as well get a head start by writing up the 3rd essay so that I can have more time for the 4th one, since I have to hand it in early. I finished writing up the 2nd and 3rd essay last week. Each was 7 pages (the professor requires between 3 and 5 pages minimum). I spoke to my friend a few days ago and she told me that the professor mentioned not to start the 3rd essay because he wants to change the readings and assignment... I emailed the professor telling him what happened and I asked him if I can give in the paper I did, even though he wants to change the readings. He just answered back saying that if I did my paper, it's worthless... I tried explaining to him that the only reason I did it early is because I'm going away and need to hand in my 4th paper earlier...but he doesn't care... What should I do? Should I just suck it up or try talking to him again...? I'm just so annoyed at him...