I wonder whether Gold cards (or whatever they're called these days) have a preferential treatment when buying online. I'm asking because we buy sometimes on luxury websites (Hermes, Louis Vuitton.. etc) and it happens that the card is declined, I spoke to the customer care of these shops giving all the info needed (name and address the same as the one on the card and so on) but they say nothing can be done when the system cancels the purchase automatically, they even try sending privately a link to my email but the purchase is still cancelled, and they ahve no explanation for it, they just say to physically go to the boutique, which can be a hassle. So I'm asking whether these "posher" cards may have a different treatment, and if so, which one is recommended to get (when I say recommended I mean more cost-effective). Thanks.