Parents are getting sued?

Former Management Company that my parents rented a town house from in London, Ontario wants to sue for $2500 (NOT unpaid rent). We now live in Winnipeg, Manitoba. Somehow they found our address! It's not in the WhitePages yet or anywhere online – How could they have found it?

Parents stated they couldn't afford to pay the amount owing or do payments. So last time the Management Company’s collections officer sent a letter (middle of this month), she said they would take it to court if they don’t pay.

My parents own the house that we live in. They have a HUGE loan on it. My mom owns a car free & clear – Which is worth about $17K-18K. Only reason they could afford this is because my mom received an inheritance..but no longer has any more of the money. They have about $250K in debt from the loan they owe for their house & credit cards. My parent's ONLY income is my dad's military pension & his disability pension -- I heard they're not allowed to collect that type of income though…but my mom still wants to switch to another bank, should she?

Now, if they can't take money from their bank account, I've heard they can put a lien on my parent's house? Can they this do so if my parents owe well over $240K on it?

How likely are they to be able to take away my mom's car? It’s their only way of getting around and my dad is handicap. My mom was going to have the car signed over to myself before they get sued, but it was already “gifted” once this year to my mom (long story) and Manitoba Public Insurance says you’re only allowed to gift the same car once in a year.