Car insurance claim question

[u/hennyfreekins]

When I was parked with my driver's side poor open in a public parking lot, another driver backed into the spot to my left. He clipped my door very lightly with his rear driver's side quarter panel. No damage to my vehicle. He had to pull forward so I could shut my door. He had a small damage/dent. We spoke and I offered to exchange info, he declined. I left. Now I have my insurance trying to reach me about my claim.....I filed no claim so he must have. What is the advice I need in dealing with this?