Incredible!!! Good news - IT WORKED!!
The status just changed to "Consegnato al Cliente" and I just logged into 155.it and the credit is on my account plus also showing when I do *123# on the handset. I also note the huge difference in speed compared to my AMEX - it took hours to go through whereas this just took a matter of minutes. WIND are now 45 euro richer.
Just so everyone else knows this was with a VISA credit card.
On a side note...the original reason for this topup was because the mega-no-limit renewed when I only had 4.84 euro credit. I was expecting the new credit to drop by the difference but it's just sitting at 40 euro (the exact amount I just added) and the mega no limit credit has updated immediately I did the 1st use a few seconds ago.
Questo il credito disponibile sulla tua linea prepagata Wind: 40,00 Euro
Opzione Mega No Limit: il tuo credito residuo disponibile ?: 2.999,09 Euro
Now, it could be I've scored a cheap mega-no-limit but I think it's more sensible to think they will take the extra shortly....I'll let you all know just in case it's a nice money saver B)