I bought a leaky camry 2007 from Granville Toyota, they refuse to fix it. How much can fix 4 tailights, windsh

The legal advicer advice me to fix it first, and sue them claim for the invoice. I do not have such amount of money. Would you please let me know how much it cost? Water went into the Glove box under high pressure washing.(Destination toyota said the winshield did not installed properly) Water went into the trunck and back part of the car; moisture inside the 4 tail lights when the humility is about 80% weather, Granville Toyota changed one light in Nov., it is still leaking now, I need to fix them too. The bumper is inflated.
Rob Pluto said that switch on the Camry intake air selector causes moisture insider all the taillight. But Toyota factory deny Rob Pluto said, " it is not the factory defeat." I paid more than 21,xxx. CAD to buy this one year old with 3x,xxx. km with odometer adjusted car, the new car price might be 24,xxx. It is very expensive already. Would you please tell me what should I do? or If you can let me know the price for fix the car? and compensate from Granville