We like to highlight the big screwups companies make. Perhaps it’s so we can learn from their mistakes. Perhaps it’s relief that it wasn’t us. Perhaps we just can’t imagine how such a big foul-up could happen.

But honestly? Most of the time it’s the little stuff adding up that hurts a company the most.

The bad customer support interactions, the interrupted service with no communication, the extra charge that takes you 30 minutes on the phone to resolve, the advertisements the company sends you even though you’re already signed up for their service. It all builds, creating a consistently negative perception of the company much deeper than that created by a one-off faux pas.

Then the new guy comes along. He has lower rates, looks great, and when you talk to him on the phone he’s incredibly helpful.

Even if the experience once you sign up might be just as bad as with the old guy, you’re comparing the so-far great new guy to the mental list of all the lame things the old guy did. And then: “What? 50% off my first month? And it’s really easy to switch?” It’s all over at that point.

Sure, have crisis plans and avoid massive screwups. But worry less about the giant disasters. Worry more about death by a thousand papercuts.