Someone hit the back of my car: my auto accident

On Aug 5 2011, at 9:35 a.m., I drove my 1997 Toyoto Rav 4 on my way to workplace.  I was slowing approaching the cross section of Highway 59 and Highway 90, and eventually stopped as I was waiting for my turn to turn right into highway 90 (there was one truck in front of me at that moment).  Then suddenly something smashed at the back of my car and I instantly felt the impact.  Even so, I tightly hold my break and prevented my car from moving forward.  I was horrified, and from my rear mirror I saw that it was a red SUV that bumped at the back of my car.  Since the traffic light turned green and I didn't want to block the traffic, I continued to drive, while the red SUV that hit my back followed me.  My workplace was just 2 blocks away, so I was trying to go there, stop the car and discuss with the driver who hit the back of my car.  That red SUV followed me for one block, but then it turned right and went away.So I never got a chance to collect information from that driver.  I parked my car, walked to the back of my car, and found that the back of my car was squashed which the bumper was bended.  The back (trunk) door is now much harder to open.