Account sent to collections without being told

My telus account was cancelled months ago and I got an email saying it was cancelled.  The services stopped working so i didn't think anything of it.  i got an email from a collections agency a week ago saying that i owe $197 and that the account was active up until a couple of days ago. I didnt recieve any emails with a bill or anything from telus until today saying that i owe that amount (never got any emails from telus for months).I asked how am i getting charged if the account was canceled.  And the person on the phone said "why didnt you call us when you noticed the account was cancelled?" I dont know why i would call them and tell them that it was cancelled when they are the ones that told me it was cancelled.  I asked how i can be charged for services I didnt receive. But the agent said I have to pay for it and that he can set up payment arrangements. Basically said there was nothing else they could do. 

It wasn't even a phone service it was their home security so the bill was less than $30 a month before it was cancelled so to get a bill for $197 seems insane. They just kept charging me without even telling me for months after receiving a confirmed cancellation

Ive been with koodo/ Telus for years and i have never had an issue but I am very frustrated with this situation.

Has anyone else had a similar problem? Was there a solution?

Thanks