I see they sell their own program DriverDetective. And I see a lot of hits on google with the word "scam" in it.
But nowhere on their site I see any mention of tech support they offer. So it's rather unclear what you paid for and what the relationship between their services (whatever they are) and the crashing of your PC is. Can you explain?
Paid money for tech support a week later the PC crashes completely, support was lousy and still not getting anywhere. I found it easier and cheaper to replace the PC rather than waste anymore time not being able to understand verbal instructions.