A bit unhappy

So it all looks like the b----d who used my phone and address data to try to do bank frauds managed to do something bad.
I am called to be at the police (special investigation section) today at 3pm - as a witness, and the case number is different from the one I had. So, the guy is guilty of something.
I got a visit from a police officer two weeks ago, who was absolutely wonderful, competent, professional and kind, who came to my home just to say he's closing the case for now and to inform me that regardless of what can/could happen, I am not to worry about anything - because basically, I don't know the guy, never heard of him.
Now it all starts again.

All my guilt is having had a tiny advertising for my professional activity in the biggest phone book in Poland, the police say that's where the guy probably took it from.

ARGH!!!! And I must say that for someone who is not used to contacts with the police, this can be an initial stress. Now I am getting used to the fact they are normal people, just in uniforms ;-)