I hate to say it but I did the asame thing once. Just trying to be helpfull I got a knofe and was cleaning my Grandfathers freezer with it (I was actually trying to get to the icecream frozen at the bottom of the freezer) and punched a hole in the coolant tube.
This is the same thing your employee has done. (minus the ice cream part)
You would be better off buying a new one than repairing this one.
FYI, Steer clear of the GE units. They are hard to get manual for and the Whirlpool / Maytag line is a better product anyways. Also steer clear of the fancy digitals. Get the nothing fancey base model. There is much less that can go wrong.
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