Mobility roaming charges outside of Canada with international plan

Totally get the frustration. There is always a chance the phone will communicate with the roaming network and open the backlog of messages or app updates that await connectivity.

When I go travelling and don't require cellular connectivity, I pop the SIM card out and store it in a case like this one:

If you need roaming/billing support for your business account in the future, you can always fill out our business support request form and track the progress and look up historical requests from within your online account: https://www.telus.com/en/business/support/article/my-telus-support-requests-faq