What to do about hot neutral in switch?
It's confusing when you say "The neutral wire on the switch is live/hot.", since typically there are no "neutral" wires connected to switches. Is it possible that the white wire from the cable is used as a switched "hot"? Wire color does not dictate purpose, how it's connected does.

If this is not the case. You'll have to locate the point in the circuit where the "hot" and "neutral" are swapped, and correct the problem. You'll then have to inspect the entire circuit, and insure it's wired properly.