Edit: Also, if I put say my stats point wrong, is there possibilities to refund them somehow?

There's Reassign button on bottom-left of Point Allotment window.
Once you hit it, your attributes will go down for certain amount and you gain that much bonus point back.
You need to wait before you can hit Reassign button again.
I'm not sure about how long you'll wait but it's about an hour or more depend on your total level.