So, get police to come out for X when you haven't done X. Then do X and police should ignore it cause last time they had evidence of X it turned out to be wron

So, get police to come out for X when you haven't done X. Then do X and police should ignore it cause last time they had evidence of X it turned out to be wrong? Police should always investigate. They should have history of previous investigations, but that should not stop them from future investigations.