One could always just use a Twilio equivalence in your country. Twilio might look easy, but it's just as easy rolling your own with something like Adhearsion. Just sign up for some cheap origination/termination services and you're ready to roll your own twilio service. I use iCall for origination & VoipJet for termination here in the US; my asterisk & adhearsion stack runs on a small cloud server at rackspacecloud.