Hi, I asked a question Thursday about this. Now have more details. Dual sim phone, Samsung. When making a call the phone asks SIM 1 or SIM 2. SIM 1 is Chatr, SIM 2 is Koodo. Choose SIM 1, Chatr, make the call and the call is shown on my plan as a forwarded call to Koodo, and I'm being charged 0.50 per minute. How can I stop this from happening? Racked up over $50 in calls so far, without my knowledge... thanks!