Bus Driver almost causes accident

I would like to lay a formal complaint against one of your drivers. This morning we were traveling on Kingsway rd traveling from Westbury towards UJ passing Helen Joseph Hospital. Time was 06.20am and there was a fair amount of traffic. One of your Putco buses came behind me and flashed his lights for me to move fatser mind you I was driving 60km/h which is the legal speed limit AND there was a car in front of me so I gestured with my hands where must I go to there is a car in front of me. The driver then then drove even closer to my rear bumper and continued to flash his lights and I tried to ignore him. He then passed me and slid open his window and made a \UP YOURS"sign and tried to bump the front of my car"