I've had the same fabric substitution problem with Shabby Fabrics.com. Luckily I caught the difference right away, but not so luckily, they didn't fix my problem. I had to order extra yardage to match from another online shop. I've had that happen with Fons and Porter too. Always attributed it to my last name beginning with "W" and by then the original fabrics for kits must have run out! No matter-it's not a good feeling!