I think I get what happened. You're driving in the right lane, on the main road, and not on the side road that's merging. The other vehicle is entering from the gas station and he doesn't turn sharply and hits you in the door. It looks a bit like a sideswipe, but the other driver's front scraping forward on your door, since he pushed your side mirror forward. Anyway, that's what I got from the story. Good luck.
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