Here is some more info. It is called Click Bombing.
If you search “Adsense Click Bombing” you will find thousands upon thousands of similar stories like yours and there isn’t much you can do about it.
My advice is to use something like Amazon Partner accounts and just sell specific products.
Not good to put yourself at their mercy like this. They got you dependant on them and then they cut you off.There has to be another way to make ad money without going through google. If not, then they own the internet and that is not good for us.