Hi ​@JackyI, we’ve checked the charge you mentioned and as it was accidental roaming we have added a credit to your account, you can check it out in your self-serve.

Having the data roaming off will only prevent charges cause by data usage, not SMS or calling. The charge was triggered by outgoing SMS while your phone was connected to an US tower. To avoid future charges please make sure you are manually connecting to the Koodo network and that the data roaming remains off in your phone settings.

For more information on how to prevent accidental roaming charges, please check out this article https://community.koodomobile.com/plans-services-232910/easy-roam-understanding-how-you-will-be-charged-while-traveling-7811296