Invalid Click - Attack

Someone doesn't like my ads and I've been targeted with invalid clicks

before the [08/11/2017] I had 1-2 invalid clicks per day over a period of +12 months.

[09/11/2017] - 1,070 invalid clicks
[10/11/2017] - 440 invalid clicks [and the day will go on for another 14 hours]

My daily budget is $100 and google charged me for +$500 initially for the 9th. [finally adjusted it]
Then I called the Adwords support and described the issue, and I was told I am getting a huge amount of invalid clicks, so my conclusion is, that same one attacks me here to wipe me out as they may not like my ads or whatsoever. The support advised me to "blacklist" those IPs from those invalid clicks [so far so good]

The issue is that I don't know what to blacklist. I have PIWIK analytics on my landing page as well as my own visit counter on my website. Both do not reveal any visitors that could be referred to those invalid clicks, so possibly PIWIK already filters them out, and my counter doesn't capture it. So I left it yesterday, but the invalid click invasion keeps on happening - this is dirty play from one of my competitors.

Anyone ever had similar issues, how did you deal with it?

I have the same situation for my business.

Competitors are clicking on my ads, spending some time on landing page, then clicking on a random spot and bouncing back. I watched this a lot on hotjar video analytics but cannot get the IP's to ban them from showing my ads. The bounce rate went up, ad relevancy and landing page experience is lost. Many keywords CPC got sky high.

What do you guys do to avoid this? If those IP's are dynamic(not static) then it would not be wise to ban them?

Try all in one WP Security plugin which has an IP tool to let you know who is on, when and their activity. That paired with the Google Analytics manager and you should be able to find out where its coming from and go from there. Hopefully that helps and good luck.