That sounds like an extremely exceptional success story out of CPD.
I was mugged about ten 8 years ago on a Friday night by three people after they cornered me and threatened to shoot me if I did anything stupid. After they stole my stuff, I went into the nearest Cheesies and called the cops. The group that mugged me told me they'd shoot me if I called them, but meh. They took took a police report, and that was that.
Even though they knew my phone was stolen, they didn't do anything like what they did for you, nor even attempt to. I ended up keeping the phone activated for about 48 hours so I could figure out who had my phone with the hopes that I could my stolen stuff back. The person who stole the phone called a lot of people in that time: their parole officer, an HIV specialist, family. Tried to pass that info onto the police and they wouldn't take it. Parole officer refused to even listen.
So I submitted some FOIAs for the camera footage of the area -- it was right off the red line at Sheffield and Belmont: no footage they said. When I called the investigator who told me that the investigation was suspended and they weren't looking into it anymore (not shocking). But I still persisted on the call to try to get some semblance of traction to get my stuff back and asked why there was no POD footage -- investigator said it moves randomly and didn't catch me getting mugged. Not sure I buy that, but whatever.
To get me off the call, the investigator asked if I had anything to drink the night I was mugged. I said I had a beer about four hours earlier. He used that as a means to say that anything I said about that night was unreliable and then ended the call.