[Piccola]

I have a Vodafone Sim card that I purchased in Italy. The store set me up with a fiscale code and I was good to go. The problem is trying to add credit outside of Italy. I travel very year but not necessarily within a 12 month period. The website does not allow non-italian credit cards to be used. Last year I went in to the Vodafone store in Italy and they set my credit card info up but somehow the data was lost. Long winded but here is the question. Is this peculiar to Vodafone or all providers, like Tim or Wind. I am considering getting a Tim Sim instead if I can keep it activated while outside of Italy. Thank you