Power Window problems of the 2007 Infiniti G35

I've owned my vehicle for just a little over two months and I regret my choice. The driver window acts up. I've been having problems with the window for about a month now. I goes up extremely slow! the auto button doesn't work. Just today I lowered my window all the way down and it wouldn't go up. I had to use my hands to pry it up. This will be the second time I take my vehicle back to the dealer because of this issue.