Don't like people that can't give a concrete answer

I just hate to deal with people that don't give a clear answer. I'm afraid I'm like that, I hope not though. That's what people mean by liking people who know what they want, and they give something clear. Not this, yes I can, but no I can't then then and then, but otherwise it should work. I'm like WTF, I don't wanna deal with you anymore...
And it kind of a general thing here in Paris I've noticed, people make things complicated, people give complicated answers. I find it annoying, I just like simplicity, yes, no.