Attempted Vehicle Theft

I am trying to get in touch with someone about security cameras in an alley of a Telus exchange building, as it is directly behind my house.  I have the address, date, and time.  

I tried to call and got shuffled around and numbers that didn’t take me where I was told, busy signal, etc.  I also tried to contact BGIS because we’ve seen their company vans, no response by email yet and unlisted phone numbers or dead lines.  Trying to avoid hanging out in the alley waiting for someone.