USAA Auto insurance claim San Antonio Texas

April 29, 2015 my car was hit by a USAA insured driver.  It happened at a 4-way intersection with 3 stop signs.  I had no stop sign so I had the right of way.  The USAA insured driver had a stop sign.  Even though there was traffic coming from my direction, he ignored the traffic, crossed the road and hit my car.  Page 14 of the MD traffic laws says "When you come to a stop sign, you must make a complete stop at the stop line.  Before starting, you must yield the right-of-way to other vehicles pedestrians. You may not proceed until it is safe to do so and until the way is clear to completely pass through the intersection." 

Clearly it wasn't safe to cross the road at the time but he ignored the traffic laws.  May 26, 2015 I received a denied letter from USAA saying I "contributed to the accident" and that I "struck his vehicle".  It also said “Our vehicle had almost completely crossed the intersection.”  This is opposite from what the laws shown above.  I didn't expect to get this letter at all.  In addition I didn’t expect to see those words.  It is unbelievable how USAA and its insured manipulate and wangle this case.