"I suppose that if you are Christian but believe the evolutionary story , you will say there is no evidence either way for the existence of God."

There is NO evidence for the existence of God. Are you saying that there are Christians who don't believe in God?

"This is why I bring up the evidences that evolutionism is impossible, and contrary to observable science."

You "bring up" NO "evidences" - "either way" - you merely choose to disbelieve in evolution! You must believe in "evolutionism" (whatever that is?) because that's what you're in opposition to ... isn't it? I'm confused ... or, rather, you're VERY confused!