Buzzer not working after internet installation

I had a similar situation upgrading to Internet 75. Our door buzzer no longer worked after the change. I contacted our building manager and he got someone in to look at it and were able to fix the issue. I got a bill for the work as they said I made the arrangements with Telus to make the change and it had been fine prior to the work. I contacted Telus and informed them of what happened and stated that all was fine prior to the upgrade. I was requested to send them a copy of the invoice for the work and they reimbursed me and offered some perks (free movies, etc.) for the inconvenience.

Not sure if that helps but I would followup with Telus to let them know this issue was caused by their installer.