possible to register at wind.it site if prepaid sim purchased with passport?

[brad]

Is it possible to register at Wind's website (wind.it) if I purchased a pre-paid SIM using a US passport rather than providing a codice fiscale? (The registration form asks for the SIM phone number and CF.) I ask because there were unexpected debits to my account and I'd like to see what I was charged for.

Details of the problem for anyone that's interested or can offer insight...

I purchased a Wind SIM in Venice two days ago for the prepaid 10GB/month (Mega Unlimited) plan. It worked fine (3-4 hours after purchase) for the rest the day and night. Early the next morning (May 4th) I flew to Rome. In Rome, I no longer had Internet access and *123# indicated 0 credits left.

I also received a couple of SMS messages from 155 like this:

Le abbiamo addebitato -14.15 Euro a fronte dei 20 Euro previsti dal costo mensile di Mega Unlimited. Per utilizzare l'offerta deve effettuare una ricarica.

(The second SMS was the same except it was for -0.51 Euro.)

After adding 10 Euro to the account today, later stopping by a (hard to find) Wind reseller in Rome, and rebooting the phone, I was back online with 4.66 Euro left. I only know a few words of Italian and the Wind reseller's English was limited, so I'm not sure what happened to the remaining credits.

I only made one 0.34 Euro call and haven't sent any SMS or MMS messages.

Sorry for the long post. Thanks in advance for any help.

--Brad