I think the only time I managed to get a Visa credit card as opposed to a Visa Debit or a Mastercard, the operator swapped it for a Mastercard a few years later.
If your credit rating's fine, it's not too much of a big deal to get a Mastercard instead, either from a new provider or from your existing one, so might be worth contacting them if you're affected...
Or indeed, Amazon offer their own MC
