Thanks for your advice. As I mentioned data package purchased but as usual did not work, skype is absolutely crap. But lesson learned! But honestly the whole idea of roaming is seemless use of the same number wherever you are in the world and yet it is clear that this is not possible on commercial grounds and that one does have to buy a sim card for every country. Wifi is generally not available enough for skype and whatsapp, viber etc to be a viable alternative except if I am spending my time sitting in coffee shops and my hotel room. As i said lesson learned