I got a ticket for improper lane change....I DID NOTHING WRONG?

On my ticket it says "failure to signal when turning or changin lanes" but on the remarks section it says "Turn signal active, changed lanes by forcing in between two vehicles without enough distance" PLEASE GIVE ME ANY TIPS TO BEAT THIS TICKET BECAUSE FOR ONCE IN MY LIFE I WAS NOT GUILTY!!! I was even waved in by the car behind me. It happend in GA and the cop was not too happy I was from up north. Any advice would be great.