That can be fixed easy enough, but I would say either wrong material, or improper heat treating was used in the manufacture. You would think that CS would have it down by now, but hey seems everyone is cutting corners to keep profits up. Was it made in USA, or overseas?
At work I have made emergency punches out of unhardened steels to cut rubber, gaskets, etc that hold up fine when punching into the end of a 4x4.
To fix that punch, I would find a center punch, or other tool with a taper that will fit into the punch. Tap that in to iron out the dents, and get it round again. Then I would spin it in my lathe to true it up, and sharpen. Without a lathe,or knowing someone with one, a drill, or drill press could be substituted. As soft as that is a good file will reshape, then stone it smooth. Without a drill you can file it back into shape too. Flatten/straighten the edge then put the bevel on.
As an experiment I would heat to bright red, quench in some oil, polish with some sandpaper, then draw to a straw-to-purple, and re-quench. Most of my punches are hard to tough enough where a file has a hard time cutting. Of course they are more prone to chipping, but with proper backing they stay sharp for a long time.