Number phoned and no one responded.

I tried calling the number back twice, but was told number was no longer in service?

This is the second time I get a call from them and after the third ring they hang up or when I answer they hang upI'm on a do not call list and I still get these calls!!!!!!!!!!!

Same thing just happened to me - I called back and the number is no longer in service... Disconnected withing 2 minutes?  I think not...

NEVER pick up an international call! You get charged at LEAST $50 just for doing so! Let them go to voice mail; at least then you have a chance of getting the charges removed!