It's worse when you have the exact problem laid out and the customer support guy knows less about the product than you do. Two years ago, I talked to the Dell Customer Support about my failing hard drive and showed him the tests I ran to verify it.

He: What do you mean by failing hard drive? Is it not booting?

I showed him bad sectors in my hard drive.

He: Is the problem solved?

I: No! You have done literally nothing to solve my problem.

He: But your laptop is booting now, right?

I: Yes, it is, for now. But it won't in a few days.

He: I think your laptop has no problem. Have a good day.

I did take a backup and my hard drive did fail completely a week later. So much for tech support.