Why do pop-ups keep popn' when I have them blocked?

I never had a problem with pop-ups before on the internet; they have been blocked, but recently they keep coming up especially when I visit my online banking site.

I tried messing with the settings – I blocked everything, but my wife couldn’t get on Fb because I had all coockies blocked (I think it said).

p.s. I am one jelly that is not tech savvy [as if you already couldn’t tell] so I am asking for someone to humor me…help a fellow Flutherite.