Where can I buy its parts in Vancouver?

Question

I bought your cleaner at the Sears one and half years ago. But I couldn't use well because it lit red light and made a bad smell whenever I used it. I asked to a vacuum businessman about that. He answered me that was due to expired filter. So I tried to buy its filter everywhere, but I didn't find it. What do you recommand me?in Vancouver, BC. from David.