stolen 2018 Giant Dirt-E 2

Was moving to a new location and I know that it was someone in the building cause as I was moving things to the truck I decided to move my bikes at that moment so I brought down the giant first and didn't exactly know how to make it fit so I left it inside the building and went back up stairs to my unit on the 3rd floor to grab another bike of mine and it didn't really hit my mind that my bike should of been there so I cared on put my bike into the cube van then removed the tires and used 2 ulocks and locked them to the frame. Did this 3 more time and thats when it hit me that my giant was missing. I called the police but since the building has a very bad reputation im thinking that my call was ignored and till this day I've never had anyone from CPS ask me a single question about my 2018 Giant Dirt-E 2. I hate to say it I've reported 3 bikes stolen,bike that I work my ass of to save the money and to purchase it online and from a pawn shop. I dont make $100,000+ a year so I can buy a bike brand new from the bike stores so when I find a good deal I jump on it. I take steps like cpic the serial number and check facebook and or every bike site you can think of to see if its been reported, even if part have been swapped out just to look a little different i do my due diligence and make sure im not being fooled.