I worked part time for them a few years ago for christmas.
By and large, they mean well, but they don't really know what they are doing and will RAPE you with random charges.
The main problem Geek Squad suffers from is you don't need to know computers to start with them. You could be a TV/ Stereo guy that was told to work on some macbook. Best Buy will train you, they have videos and tests and shit you have to pass to stay in Geek Squad. The problem is that the training is NOT the priority, and managers can grant extensions on training. So you end up focused on selling service plans with make Best Buy a ton of money, and help floor reps sell stuff, but you never really sit and take the tests or do the training.
It is really weird, I think Geek Squad was a really great service that got ruined when it "merged" with Best Buy, as they are now focused on making money and not fixing shit.
Honestly, I havne't shopped t Best buy since I worked there.
So all that being said, post up your problems and the rest of us can attempt to help you