I forgot to mention also that I call Sweden alot and about 8 time during this year I ended up in Italy some automatic answering maching though I knew I had dialed the landcode for Sweden (know it by heart after have lived in the US for 7 years) but when I called to complain, Vonage told me that I had dialed the wrong landcode, haha, they told me to hold and they dialed the same number I had dialed which led them to *drumroll please" : Italy..
I wouldn't try Vonage ppls, just a tip from a former customer of theirs!