Internet Plan Renewed Instead of Processed for Home Services Cancellation

I called Telus about an hour ago to cancel my DSL service. I expected it to be mildly annoying. I did not expect the agent to lie to me and cheat me.

1. Called to ask for service cancellation. Told agent multiple times that I already have new service with another provider. She ignores me and asks me to renew.
2. I state clearly that I want to cancel my service many times. Eventually she tells me OK, but she will have to connect me with another agent who will actually do the cancellation.
3. She put me back in the main hold queue, and then renewed my DSL plan silently.
4, The next agent who I connected to had no idea what she had done.

This is so awful. Straight up lied to me, refused to do the thing I asked, and then instead did the opposite. I am extremely angry about this, as I'm sure any of you would be.

I'm documenting everything, trying to cancel in writing with Telus, eventually plan to file with the CCTS (Commission for Complaints for Telecom-television Services).

Does anyone have any advice either for how to ACTUALLY get this service cancelled and/or with filing complaints to the CCTS?

(Insane that I am posting on a corporate forum asking how to not have their employees defraud me, but here we are)