All I can say is I feel your sorrow, I had my two vehicles keyed a few years ago. A few day and weeks apart I started noticing different key marks on my vehicles when parked over nights where I lived. Sleepless nights, parked vehicles on different streets to avoid them being keyed, staying out late night after night in my brothers car to catch the person responsible
. I finally found out that there was a guy in the building that was keying my cars because he did not like me for what ever reason I don't know, long story short when I confronted him and almost went to jail, my car was never keyed again. Then I finally decided to move. So yes I feel your pain.