Hello Moonlka,
Welcome to the community!
Sorry to hear you've incurred unexpected long-distance charges. The mobile providers only know usage. I understand you don't believe you made any International calls, however, if the calls are on the system, they would have been made using your SIM card.
Have you had a chance to view the details of your bill? You can do so via your My Account --> View & Manage bill. From your Bill overview, you can View and/or Save a PDF copy of your bill. Alternatively, you should be able to view additional charges online through the Usage summary. The call(s) incurring those charges should be listed.
As mentioned, I understand you don't believe you made any International calls. Is it possible some of your calls were made to an US area code? Since both Canada and US use the same numbering system, the numbers appear very similar. You can view Canadian area codes here.
You should note that this is the community forum and not intended as a venue for customer services. We do not have access to customers' accounts. We would not be able to verify the additional charges on your account. If you wish to discuss the matter, you would need to contact customer service. In addition, they can also be contacted via Live Chat, Facebook, or Twitter. Those methods can be accessed via the contact page posted above.
Hope this helps 😀
Cheers
