I know of your frustration. A few years back, when I lived and worked in New York City, I had my garage broken into and several tools and supplies stolen, early in the morning but in broad daylight. The thief was bold enough to back down my driveway with his stolen car and load up. The wife and kids were asleep and never heard a thing. While he was doing so a neighbor saw the car in the driveway but the trunk was open and he didn't see the guy loading up. He thought perhaps I was working on someones car.
An hour or so later the wife called me at work and asked why I left the garage open? I called the police and ran home from work. I was home before the police arrived

. They took a report asked if I had insurance told me not to worry just report it to my insurance company. They had no interest in doing anything else. My friend is my insurance broker his response was troubling "double lock the garage door the thief will be back tomorrow to get the other tools he could not load into the car "

!
You would not believe it but his advice was on the money. The wife now terrified that the thief would return kept watch while I went to work and sure enough after I left this guy comes walking along and goes up my driveway and tries to open the now chained shut garage door. Unsuccessful he jumps over my fence to the neighbors yard and proceeds to rifle through his shed. The wife calls the neighbor, he had not left for work, he comes out with an axe and chases the guy. The wife calls 911 then me at work. Well again I get home from work, some nine miles away, before the cops arrive. Another neighbor catches this guy coming from his yard and gets the plate number of the car he is driving. By now the guy is long gone and the police just "look around the neighborhood for the car".
Back at work I run the plate and find out the car is stolen, no surprise. A few days later I run the plate again and the car is no longer on the stolen list. I do some research and contact the owner of the now recovered car. I explain that there car was used to rob my garage of tools etc and ask if anyone was caught with their car. To my surprise they told me that a guy was caught with the car and a trunk load of tools over in the next county. I call the arresting precinct and take a ride to see if my tools were among the recovered stuff. No such luck my tools are gone. I did however get the name of the person arrested with the car.
When I get home I call my precinct and let them know of the new clues/evidence I have uncovered. Their response "Gorbachev is in NY for a visit and we don't have time for this"

One of my friends a NYC Detective put it in perspective "you have insurance so you will get some of your money back, they (the local Police) would only get interested if they could have some extra charges to pile on to this guy, but, he was caught in the next county and they just cant be bothered".
I drove past the thief's house but could not see any of my stuff from the road. Since that time I double locked and alarmed the garage and moved my expensive tools to the basement. Stuff in the garage is chained together tool boxes locked. At least now it will be a pain in the butt to load up your car with my stuff, perhaps long enough for someone to notice and call the police.