Scamming me.?

Are they scamming me.!? So I got this truck in June and I’ve been on time with all my payments even earlier and right now I was going to pay my next payment which is until September 5 but I noticed the balance was higher I was like maybe I’m wrong so I checked my photos because everytime I do a payment I screenshot it and they added like $100 more.! Idk what to do should I go tomorrow morning and tell them what’s up with that or what.?? This is the first truck I’ve ever gotten and I did get it just because I wanted my own ride now I’m like dang I should’ve just gotten a regular car In cash smh. I have screenshots of every paym

And the bottom pic is the recent one we’re they added $100