I hate to say don't try someone new, but ... we do have a plethora of competitive, reliable online knifesellers ... One Stop Knife Shop, Bayou Lafourche, New Graham, KnifeCenter, even Smoky Mountain. And at least a dozen more, easily, that no one has any reason to complain of, people in business for a long time.
bhyde is right. There are a few facts you can check. Or ask here first, not after the order's missing in action for a month. Don't wait too long to dispute the credit card charges! You shouldn't BE charged until the order ships, so, send one last email stating --
"I have told my card company not to pay this charge, so please cancel it NOW. Thanks, goodbye."