Prius (2010-12) :: Steering Wheel Alignment / Car Pulling To Left

I bought 2015 Prius two 2 month ago and the mileage is almost reaching 2000 mile. I am satisfied with my Prius so far. However about 2 weeks ago I found that the steering wheel is little off centered to the right and the car is leaning to the left. I didn't drive on the potholes so I guess the issue has been there from the first day I bought the car. I was just too excited to see the issue at the time I think. Anyway I brought the car to the Toyota dealership where is close to my work. I explained the issue and the technician drove the car and said it seems ok. I said it's not my first car and I have driven several cars so I am certain that the steering wheel is off centered. I researched this forum so I knew the first wheel alignment is covered by the warranty. They seemed reluctant to provide the service but I insisted.

After about an hour they had done the wheel alignment and showed me the result and the result said everything is ok and all the numbers are in the range. It was strange so I asked what if the car is still pulled off to the left and he said there is nothing he can do further so if the issue is still there, the service manager should be involved. I hoped the issue would be resolved but when I drove the car back to home I could still see that the steering wheel was still off centered just like before the wheel alignment. I called them and made another appointment on this coming Monday. I read all the steering wheel alignment related threads and found that it's pretty common issue for the new cars. But I found few people that the issue was completely gone. I think it's a quite easy job to fix by adjust something to make the steering wheel rotated little to the left(3~5 degree). I showed to my wife today to see if I'm too sensitive and she also agreed that the car is pulled to the left.