stolen 2015 Diamondback Lindau EXC

My bike was on the back patio in the backyard with a 6ft wooden fence around the entire yard, at the end of a cul-de-sac. They would've had to get the gate open and go down the side of the house to the back then go up onto patio to get to the bike. It had a flat back tire and bad brakes waiting to be fixed. I don't have serial # even though I've owned the bike for approx. 3 yrs only because I could never find where it was on the bike-not in the usual spots.