Good evening & welcome to the Rogers Community Forums @goldberry,
It's always a good idea to clarify about any potential charges instead of incurring any, especially on the first invoice. As long as your wireless plan includes unlimited calling and messaging you will not be billed for any incoming calls or messages. However if you were to send a text or call a US/International number there will be a charge. Charges vary depending on the location you call or text.
Hope this helps
!
RogersZia