We should probably start having regulations around IOT servcies. The issue here isn't that the customer or the service rep was abusive. The real issue is that the company can disable the cloud service that is essential for their product to work based on their perception of the customer. It seems really risky to purchase IOT products right now.
I will not buy any IoT ever, even with regulations.
Factor in that IoT has terrible security and has already been massively exploited and now you're part of a criminal ring of webcam owners or fridges or whatever gizmo that attempted to DoS a DNS root server or government or antiterrorist unit and according to laws you can be jailed/decapitated/fined or worse.