If I am understanding correctly, it is not the phonecards that are to be blamed but NTC has bloced all VOIP calls. But why should NTC do that? People should be allowed to receive phone calls from other countries. Oh I guess it is like one of those things like you know having to pay in the airport to catch a plane, having to get work permit (shram sticker) to work in other countries, having pay to climb mountain  etc  etc... All bullsh*t, we live in a free world