Have just cut your card in two, after a long run-around through service-numbers and trying to get some help. Was prepaid, wanted to top up my Kredit, did so in Telekom in Lüchow, as there is no Vodafone shop nerarby, 15€, gone nowhere it seems, Telekom knows nothing, Vodafone knows nothing, cannot help, offer only to switch to postpaid.Even got hung up from Kundeservice.Although they found my name connected with my number/card and the birthday date of mine which I said matched with what they have in their data, they did not want to do anything without the Kundennummer, which I could not provide, as I forgot to bring that big red card, whatever is called, to Germany this time.As I may stay in Germany permanently, am not sure yet, but there is a possibility (then I perhaps switch to postpaid as well), I truly hope that there are other options apart from Vodafone or Telekom.