Battery problems of the 2010 Buick Lacrosse

I purchased a Buick Lacrosse in may 2010. I began having issues with the vehicle June 27, 2011. I've had multiple mechanical issues with the car. The electric heater in the seats have gone out 3 times and been repaired and is now not working again. The last repair on the heater in the driver seat was January 2012. On August 1, 2011 the car was towed to the dealership due to the battery leaking acid all over the wires and several other parts. The was kept for almost 10 days. The visor for the moon roof started malfunctioning and had to be repaired. The engine had a knocking sound and I was told that's how he care sounds. The door handle had to be replaced, the car has had ongoing electrical issues and gm has not worked openly and honestly with me. Gm has repeatedly told me the care is not eligible to be bout back but will not give a explanation why. I repeatedly requested to speak with a supervisor and was denied opportunity by a gm rep name [xxx] for several weeks. I have repeatedly asked for something in writing and gm refuses to put anything in writing. "when I explained that I wanted them to buy the care back due to the ongoing electrical issues and not to just extend the warranty I was told by the gm rep that I was trying to play a all or nothing game and may end up walking away with nothing. " after that comment I felt bullied into excepting a offer of two car payments and a extension of the warranty to 45,000 additional miles. I later withdrew my acceptance of the offer due to the seats malfunctioning again and feeling as though I was forced to take the offer with the gm rep denying me the ability to speak with a supervisor for weeks and making the statement that he made during a conference on 2/24/12. This is the second gm vehicle that I bought in the past 4 yrs that had electrical issues. My 07 Saturn aura had electrical issues lost $9000. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).