Sure, you have to provide the stuff they request, just like you have to comply with police officers in the moment, but you don't need to (and should not) talk "

Sure, you have to provide the stuff they request, just like you have to comply with police officers in the moment, but you don't need to (and should not) talk "help" them or give them any information beyond what you're required by law, which is often your name and not much more. If our local IRS equivalent contacted me "to clear something up", I'd defer them to my tax consultant in all cases. Assuming good faith with state employees is often a costly mistake.