Unauthorized Account Changes

I phoned Telus and requesting they escalate my concern. A manger phoned me back and let me know it appeared my in-laws when they requested the new service at the same address initiated the cancellation of my services. I was very surprised and asked how someone can simply cancel my own service. They explained that it’s not normal but does sometimes happen. He offered me a $100 bill credit for the inconvenience and did apologize but would get everything backup and running. Now, here we go. About a week later I come home and login to my Telus app and find a $1400 cancellation charge on my account! I also noticed my wifi modem on my app is a different account and no longer has any of my family /parental settings, security system is disconnected and I can’t login to the customer service page. I’m at a loss, I can’t believe how much of pain this continues to be. I scheduled a call for tomorrow and hoping they can clear this up.