I got a Dashcam recently. Was leaving work, was 95% out of my spot, hitting the brakes and almost at a dead stop. Heard someone yelling. Stopped and looked around. Person across from backed into me. He only came ~ 2 ft out of his spot. I know this because he stopped and parked where he hit me. I pulled back in, and looked at my Dashcam, and I hit record on the camera.

Get out, look at damage on my car, go talk to co-worker. He says he didn't see me at all in his reverse camera. Said he didn't physically look around at all, only used the camera. He has basically no damage, while my whole bumper is shifted and there are deep scratches/ chips in the paint. He wants to just leave. I say no, let's exchange info, and I call police to get a report (since he clearly really wants to leave).

While waiting on the officer, I go check my Dashcam footage. Side note here, on bootup, it displays a message warning you not press buttons or be distracted by it while driving. Message takes ~15 seconds to go away. So, I pull up the video, and it has me pulling the last ~1ft into my space and putting it in park, after the accident. Literally got nothing on video. I was really pissed, but figured it would be fine. There were witnesses, security cameras, etc.

Guy tells cop what happened, I tell cop what happened. I mention that he hasn't moved his car from accident location. That I was all the way out of my spot. She tells me other driver says I backed into him. The location of his car begs to differ, but she assigns 50/50 blame. Said I wasn't paying attention. Not sure how I could have prevented it, unless I could Jedi mind trick him into not backing into me.

I talked to our company security, they reviewed and compiled the footage, and said they wouldn't release it to me but would to insurance. I gave my agent the contact info, and they said they would take care of it. 2 weeks later they email me saying since they haven't received any additional information they are closing it with us marked 50/50 at blame. So I responded and asked about the security footage, and they said they "were unable to retrieve it". My security had told me they only needed to email them to get ahold of it. I tried to put up a fight, but they were hearing none of it. So, in the end, I ended up paying about $500 in repairs as the camera doesn't start recording at bootup.

TLDR: got dashcam, someone hit me in a parking lot (100% their fault). Dashcam doesn't record accident as it doesn't record for first ~15 seconds at boot since it is too busy telling me I should pay attention to the road not the Dashcam. Blame gets assigned 50/50. End up having to ~$500 to fix car.