Unfortunately, I am not in charge of the Telecomm providers for ******removed per request of OP****** so my suggestion for using DialCoin was just in case you needed it in a hurry. I don't set the rates for DialCoin, the Telecomm providers do 
What about your margins?Our margins are barely enough to bother running the service. We already know that SMS providers rape you in fees and some countries more than others. We're moving in February to allow landline charging and other payment options related to mobile phones to open up more opportunities,
Nevertheless, it's a service we provide and it's been doing pretty well so far and we hope to make it even better.