Although Visa card works great at many online shops, websites and merchants, however at one or two sites/online merchants it didn work, why?
No credit card in the world can claim work at 100% websites or merchants. The reason is simple, sometimes though a card is even active and have enough funds but is denied, because certain merchants have their own rules or adopt their own policy before accepting a credit card order. When this is the case then it is out of our control and we cannot force a merchant to accept the payment. Every card holder should understand this fact, however if certain merchant doesn’t accept a card even though there is no problem then you can find the same product from another merchant.