I have had my taxes filled incorrectly by the government about 5 times, each time about 300-400% of the right amount (Switzerland). Thanks but no thanks. This

I have had my taxes filled incorrectly by the government about 5 times, each time about 300-400% of the right amount (Switzerland). Thanks but no thanks. This is like "why do you need an attorney if the government can give you one for free"?