evidently my ex called police,told them she saw me hit another vehicle and drive away, they just showed up and said I did it, I didn't hit anyone or anything and have no idea what it was all about, there is no one even claiming I hit there vehicle or any property for that matter, no evidence even suggesting I hit anything but now I have a court date for hit and run. can they do this? I know I need an attorney and will consider someone from this site but first and foremost need some input on this.
Until you have seen the police report, it will be difficult to assess what the case is based on and how best to approach it. You should retain counsel right away so that you can figure out how to defend the case. But to answer your question, alleged victims make statements (whether true or not) and the police act on those statements. You need a good attorney to dismantle the case if, indeed, you have no culpability.
Criminal charges are formal accusations in court that someone has committed a crime. Criminal charges have many classifications and degrees of severity.