Received a collections notice for an account closed 2 years ago with a $0 balance

I closed my account with Telus in October 2023 and received a final email in December 2023 noting my account had a $0 balance.

2 years later, I receive an email from ARM collections agency that I owe money to Telus. I called Telus, but they were unable to tell me what the amount was for.

After emailing ARM, I got an email that there was a payment and the file is closed. I still have a collections notice on my credit report from another company General Credit Services that says my file is still open.

Can I get some help? I never received any notice from Telus that I actually owe money to them, it's just from 3rd party companies I never had any involvement with.