Telus Building Mainenance

Any idea how I can contact Telus Facilities?   

The Telus building at 224 Riverwood Circle SE, Calgary, Alberta has two issues:

1.   The A/C unit in the back yard is making a pretty loud noise and has been for a month or two.  Is there something wrong with it?

2.   There are a ton of weeds (Mainly foxtails) in the back yard that need to be dealt with - Front yard gets regular maintenance but the back yard does not.

Thanks so much,