We had some expensive diagnostic equipment stolen from a workshop (>£15,000) and reported it to the police. Apart from a crime reference number, no one even came to the workplace despite having a list of possible suspects (identified through our ID badge swipe logs). Saying they weren't bothered would be downplaying it.
One of our guys trawled eBay for a few days and saw it appear listed, so he contacted the seller. Through the messages he was able to obtain their address (under the illusion that he wanted to collect) and passed it on to the police under the crime reference number. By cross-checking the list of possible subjects against the ebay address we discovered that the ebay address matched a contractor's next of kin address, so were 100% confident we knew where to send the police.
A few days went by when we heard nothing so we enquired and got a less-than stellar response i.e. "sorry, that address falls under a different force, blah blah have to wait for them to pick up the case blah blah kthxbye". The police later showed up that day to take a statement. Several more days passed and we heard nothing. It eventually took another phone call insisting that we know where the item was and that if it is sold then we are even less likely to see it, losing any hope of ever getting it back.
I can emphases with the OP because when the police did show up at the address, the next of kin panicked and admitted the whole thing