Richard Bell is a great real estate lawyer but he is not a litigation lawyer. You need a litigation lawyer. There are many in Edmonton, from the cheap/slimy to the very expensive.
What specifically do you want to litigate over ? Incompetence? Or gross negligence? What proof do you have for the latter? The former is tough to litigigate over and likely a waste of time.
Another avenue is RECA which oversees realtors and real estate brokers incl. property managers as all property managers in Alberta have to be real estate brokers.
The third and likely best avenue is small claims court, up to $50,000, in Alberta as you do not need a lawyer, just a good argument and some decent evidence, such as a sworn affidavit or records such as letters or emails sent and/or received. Tough to argue if most stuff was on the phone.