Nsandi

Premium Bonds. payment by Visa Electron (debit card), as indicated by the site nsandi. says "invalid card number". I use this card all the time and I have enough money in my account!

Telephone and purchase them by phone. Good luck.

Try it as a Visa credit card, he can work this way.

Do not use the number at the bottom that says the card "- use many times in the center.