I think the service is not active yet, anyway, you have to recharge in the same country where you buy the top-up, so buying it in Germany you have to go to Germany in order to top-up... quite stupid, but so it works.
So, you should buy an O2 UK top-up card, since you live there. There is a recharge fee, of course, as follows:
- 1? for refills up to 4?
- 2? for refills up to 10?
- 5? for refills up to 59.99?
- free for refills of 60? and more
The exchange rate to ? should be published on
http://estero.wind.it but of course there's nothing by now. Surely it won't be too good.
To refill you have to dial the short number 4242. The USSD code is: *124*4242#. With O2 you don't need USSD codes, since it has direct roaming (CAMEL) but I fear you could pay 1?/min with that, while with USSD it's surely free of charge (I should investigate).
Anyway, if you need an Italian top-up don't worry to ask me or Andrea, we surely can help you. Unfortunately Andrea has some problems with his ADSL in these days and that's why you cannot see him here on the forum, and I fear he cannot read e-mails as well (there's some weird problem, he cannot surf non .it sites). Feel free to write us in private (I read the same e-mail) if you need help. I'm sorry because Andrea could surely be more helpful since he's an expert about credit cards and Wind website, while I refill directly with my landline postpaid account and I never used it.