Unfair Insurance Settlement

I was recently involved in a motor vehicle collision. I was parallel parked between two cars on the side of a major road (2 lane road with one lane for traffic going north bound, the other lane for traffic going south bound with two lines in the middle of the road so no cars were allowed to pass over in opposing traffic). There was a 3rd uninvolved vehicle waiting for me to pull out of my spot so he could pull into my spot to park. As i was pulling out, cautiously watching my side view mirror, i felt it was safe to pull out when the 2nd vehicle went around the vehicle(3rd uninvolved vehicle waiting for me to pull out) into the wrond lane of traffic crossing the two lines in the middle of the road and hit me in the front left of my truck, my truck met his right side mid body. When the police arrived i explained to him what happened, he wrote in his report that the 2nd vechile had HIT ME, and also that the guy who hit me had TWO counts of unsafe lane change, while i had blocked vision and unsafe speed(?) So i spoke to my insurance company explained to them what happened, they took my statement and now are telling me that i am at 75% fault without even talking to the other insurance company, and are pretty much dead set on this number. I have tried talking to my adjuster numerous times that this is not right, that i was not at fault, but she does not want to hear it. At this point i am not sure what to do, any suggestions as what to do to make the other guy responsible for the accident would be greatly appreciated, thank you