Spooked

Hello again. I checked over my bank statement versuses my checkbook to make sure everything is even. Well I usually get all my written checks with the statement. Well this time I got all but 2. When I first saw 2 of my credit cards charging my account on the statement I thought someone maybe used my credit card checks to make a withdrawal, but I shred those checks when I get them. I realized 2 of the checks missing and figured the statement was putting down who cash the check I wrote next to the check number. I hate it when businesses change the rules and not bother to tell you. Like changing rules in the middle of a game with children, it is hard to keep up.
Speaking of change, What is the deal with the US Mint repeatedly changing the currency designs? I would like to know how we retailers are suppose to know a fake bill from the real when they keep changing the design, especially when the older styles remain legal tender. And they have to change the coin designs too. Are they just trying to make money from coin collectors? It makes me curious. Post later.