I have used Pingo for at least 2 years - when I saw a slick ads on DC metro buses. It's been a very frustrating experience for my wife and I. We call Thailand regularly. I would say, conservatively, 90% of the time the call does not go through. After we dial the number, we get extended silence and then busy signals, busy signals, wierd ringing sounds, silence and clicks. This morning, in fact, I tried 10 times, but was unable to get through. The helpdesk, who have thick Spanish accents, tells us to wait a half and hour. I wait, still the same. I call back, they say wait a half hour. I tell them that is what you said before, let's get their technical people on the phone, they say they can't do that. This has been going on for two years. I am now searching for alternate international calling options.