stolen 2019 Giant Talon XL

I locked my bike in front of 520, 5th Avenue SW around 4 p.m. and went up to my sister's law office -- Fosters LLP. When I returned two hours later there was a bike in the lobby -- a smaller green Supercycle -- the security guard said he brought my bike inside, I told him it was not mine. I went outside and found my cut lock still around the sign post. The thief must have been riding by on the cheap bike and saw my more expensive one and cut my lock, stole my bike and left the cheap one. I called the police at 6:39 p.m. and they told me to file a report on line. They said they would come by 520 5th Ave. to pick up the other bike. I waited until Monday, 14th so I could call the shop I bought the bike at to get the serial number. They do not keep that information. I bought the bike May 1, 2020