I sympathize with you.
Many years ago my house was burglarized. About $8000 worth of stuff was taken. The police came, examined the broken door, even dusted for prints, and gave me a report number which I gave to my insurance company and later got paid for all the items. Was I pissed? You bet I was. To the extent that my friend and I stayed up all night, with guns, hoping that the bastards would come back. They didn't and, eventually, I (and my family) got over it.
You know those convenience checks that the credit cards send you? A few years ago they were stolen from my mailbox and were cashed to the tune of about $1600. As soon as it appeared on my account I filed a police report and a written dispute with the credit card company. Within a week the charge was deleted (obviously not my signature on the checks). The criminals were never caught. Guess what, I got over that, too.
Nobody's saying you don't have the right to be pissed and nobody's saying that criminals shouldn't be caught, prosecuted, and hung from the highest yardarm.
The reality is that it often happens that they don't get caught and the best result you can hope for is getting your money back.
At that point it's your choice whether you want to fume (rant, rave, vent) about it indefinitely or have the wisdom to accept that which you cannot change: that it's over and done and you move on.
Believe that your are a victim, and you are.
Believe that you aren't a victim, and you aren't.

