Cancelled account alleged unpaid balance sent to collection

My 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. 

I know that's probably not helpful, but you arent alone. Ive been with koodo for years and i have never had an issue but I am very frustrated with this situation with Telus