HVAC disruption Yates St. Victoria BC

Hello, 

there is a Telus building located on Yates street between Quadra and Blanshard. The HVAC on the roof is functioning at a very high-pitched disruptive sound. I live close by and this has been a problem before until it was fixed. Now it has started again. Is it possible to connect with the building manager and provide an update on the status of this?

Thank you