From what I’ve seen and experiences from the early 2000s, Gateway had horrible customer service, really really really bad. No idea how it is now, but it was really to the power of three bad back then, so maybe it’s only one or two really’s now.
I even recommended a co-worker against buying a Gateway laptop once because of how bad their customer service was, but he thought they had a good deal. A few months later, they had lost his several month old laptop after he returned it for service and sent him a “new” one with coffee stains on it and crumbs in the keyboard.