I sincerely apologize for the delay in response. Here at Rogers we take fraud very seriously. We have a set process for handling these kinds of concerns. Do you know if the activation was done over the phone or via the browser?
Have you been in touch with our customer service or the Fraud team since you last posted here? Please keep us posted :).
For future reference, our customer service is open 24/7 via Twitter @RogersHelps or on Facebook.com/Rogers.