GF66 ZXU Speeding undertaker

As i was indicating to turn left then this car came speeding round on the inside and indicated at the last moment to turn left. I shrugged my shoulders why he was driving so fast to turn left then the next minute he putting his hand out the window and giving me the finger. At the next traffic lights he was just about to carry on but when he noticed i was truning left he did the same and just a little bit down the road pulled over and wanted me to stop. There was no way i was stopping when there was two aggessive men in a car and i was on my own. They followed me for a while till they got stuck in traffic.