Rear Window Wiper Washer problems of the 2007 Toyota Avalon

Dash indicator on my 2007 Toyota Avalon signaled that windshield washer fluid was low. I filled the tank with fluid. The next day a pool of washer fluid was on my garage floor. I immediately took the car to the Toyota dealer for service on 2/14/2009. I was told leaking was a common problem because the oe line used to carry fluid through the system was the wrong size. The dealer removed the incorrect line and replaced it with the recommended correct sized line. I was charged $78. 26 for parts and service. When I complained that this was a safety issue and the oe was not the right size, I was advised to contact Toyota corporate for relief. My complaint elicited a $47. 50 "goodwill reimbursement" ( which was the cost of the parts) on 7/8/2009.