1 credit gone

[offcina]

i'm trying to unlock 5 k3635 from vodafone( free unlimited for dogle users)
but it was dificult to cath how to do it...the first one whrn it finslly reads the first option was not available (unlock and write to modem, so i had to calculat codes from imei.... 1 credit gone
the second and all the otheres went ok.... no credits consumption, any ideias why the first one eat me 1 credit? any way to have it back?

[Avantha]

It is free for the dongle users.You have selected the calculate code from IMEI,that operation need 1 credit.When you are reading the modem,if first option is not available means,reading error.You have to read the modem again.That is why other modems are unlocked without a problem.

[offcina]

so, lost 1 credit right?

[Vincentas]

Yes, you are right. If unlock code was calculated, 1 credit was taken.