Short Mans Complex

I've had it. There's a certain "short person" (I'm not even going to call this little pipsqueak a 'man') at work who I'm going to have it out with soon. I'm positive that I could break him in half using only half of my strength. I wanted to spit nails today.
For the past week I've been testing something of his and it's not working. I keep telling him it's not working, I've documented it, I've given him specific instructions as to how it SHOULD work. He STILL keeps sending me emails explaining how it should work, and i keep sending them back telling him I KNOW HOW IT SHOULD WORK BUT I'M TELLING YOU IT'S NOT WORKING THAT WAY. (seriously.......i was NICE! people told me i'm TOO nice in the emails back to him. -no one has EVER said that about me regarding work before!)
THEN........the little varmant decides he's going to disregard what i'm saying and change the status of the issue to 'certification' (which means i've tested it, passed it and it's ready to be deployed). I freaked. I emailed him and his no good supervisor and asked if this was really fixed because I tested it 15 minutes prior and it didn't work. All this did was spark an email battle between me and said 'pipsqueak'. THEN, the varmant comes over (and i see him coming so i hide) and asks the person next to me how it's supposed to work! I almost hit the ceiling!
Meanwhile...........the supposed 'supervisor' didn't respond to one email in the entire email battle that went on for over an hour.

Spineless morons.