I had a poor experience with Lenovo as well though it wasn't entirely their fault. I bought my son a pretty high end Lenovo laptop about 6 years ago and had it shipped to my office. UPS did not deliver on schedule (as I recall, they said there was nobody at the front desk) and when they electronically notified Lenovo, they issued a "return to sender" command instead of trying to deliver the next day or returning it to the UPS warehouse where I could pick it up.
Lenovo customer service was completely worthless. They would not escalate it beyond the India call center, and said we would have to wait another 4-6 weeks for it to be returned to the factory, processed, and re-shipped back to me. I was absolutely livid - after several days I finally got high enough in the supervisory chain to get them to cancel the order and return my money. The same laptop went on sale at Fry's for $100 less the next week and while I did NOT want to deal with them again, my son had his heart set on that exact model after he had done weeks of research so I got it for him.