Retired senior couple need a house/apartment urgently

URGENT - My wife and I are senior citizens and looking to rent a small house in or near Rocky Mountain House, Alberta. The small house we rented in Calgary has been sold and we were told to find a place to stay elsewhere. This is a huge shock to me as the landlord never mentioned to us that he was planning to sell the house. How can people be so cruel to do this to anyone, including senior citizens on a relatively small government pension, OAS and GIS. We also have small Chihuahua that we adopted in Mazatlán. She is not aggressive and very quiet. All we need is a one- or two-bedroom small house that is in a safe area for seniors. We have applied to so many seniors housing facilities which we were approved and qualified for, but most have a long waiting list. We do not drink or have parties and respectful to others. If you can help or assist or have information in this respect, it will be greatly appreciated. Thank you very much, Christina