Question about creationist argument

[Dystopia]

I've been seeing this argument by creationists that goes something along these lines: "mutations don't increase information in the genes, therefore mutation cannot account for an increase in complexity"

I'm not an pro on mutations or genetics, I don't know a lot about it, I'm more of a social sciences person. I can however tell you I'm surprised there is a creationist smart enough to use that argument. The usual creationist argument is - God created the world because the world can't come from nothing, and since the bible says so it's true, because the world is perfect and there's not way it wasn't made by god's hand. They also frequently say - If evolution is true why are there still monkeys?

I don't even bother arguing with these people anymore