I'm running an account right now with a respectable $.20 cpc in a fairly competitive Demo over mobile. I would normally be very happy with this, except for the fact that my cost per website click is actually a whopping $.34
My stats look like this:

as you can see, I have a ridiculous discrepancy between "clicks" and "website clicks". However, I have literally no idea where these clicks are going to. I have looked at every stat I can think of and nothing accounts for the difference. As you can see, I have a very minimal amount of social actions that doesn't even come close to making up for the discrepancy.
what is going on here?
What ad type?
How are you tracking website clicks and what does your tracking system should in comparison? Is FB showing fewer 'website clicks' that are actually occurring?
Everything else looks fine, i.e. actions looks close to the sum of all the social actions and website clicks shown.
Where the clicks and unique clicks are coming from I'm unsure of... The fact you have more unique clicks than actions suggests there is some piece of the puzzle missing. Social clicks? Photo views? Turn on every column available.
Clicks to your Page and clicks on the 'Like' button both factor into the Clicks metric (according to AdEspresso). Probably other things too. Best to disregard it.
As for your other posts regarding confusion about FB marketing: there are nearly as many people on FB as there were people about 100 years ago. Yes there will be unexplainable X-Files-worthy events. Deal with it. You are showing ads to a planet. Keep submitting, keep testing, disregard everything except 'Website Clicks' and ROI. 
The 60% partitioning isn't at all odd due to the nature of the social ads.
However, what I find odd is the fact your 'actions' are much lower than your 'clicks' and even 'unique clicks'.
Actions encompass most events... this data suggests some source of clicks that isn't a page/post engagement or a click on the post link.
If a single person liked the ad, and the page, commented and shared then you may pay for 4 clicks but this would also come up as 4 actions, thus the action-click difference is difficult to reconcile.
I'm drawing a blank here. I would contact FB and see what they say.