You have to get accustomed to Google playing dumb in this game. Google will do only what's needed to get legal off their back (whatever they think is enough).
You have a problem with invalid clicks, being that there is somebody or a group of people clicking on your ads deliberately or that genuine visitors are creating multiple clicks in a very short period (including double clicks), or that something hard to explain is happening.
So you approach AdWords, and all they do for you is to give you a link like this:
So you browse through it, and among all you see a link that says Invalid clicks troubleshooter
You quickly pick that one in a hope you'll figure something out, and you pick a radio button that says I see many brief or zero-second visits to my site
You learn that your ads and/or site sucks.
In any way, it's your end - typical for today's world. When your Internet connection is down, it's not about ISP, it's your router you know. Contact the manufacturer.
Same with AdWords, it's never about them - but about us only.