The only way to say 'none of the above' is by filing an informal vote. This is a de-facto way of saying that you don't like any of the options, and at least in Australia this informal vote is tracked and parties take notice of it.
In the USA if you vote to not vote, Washington bundles you in with everybody else and assumes that you have no interest.
The ideal solution would be
a) Voting is mandatory, but with a formal 'none of the above' option
b) Voting is not mandatory, but representation is allocated based on what portion of total people voted for you, not allocated based on the portion of the total vote. (ie. if in one state all 25M people voted, they should get 5 representatives in congress, while if in another state of 50M people only 5M votes, they should only get 1 seat in congress)
With a quota based system based on proportion of population congress/parliament would then be a true representation. It is the only way to reflect the will of the entire population, meaning that those who choose to stay at home can no longer be ignored.