I ordered from chewy twice, but that was it. They had some sort of discount offered if I signed up and signed up for the auto shipping, but then failed to apply the discount on the second shipment. I can't recall now if it was a break on shipping or if it was a product price discount or what - not that it matters what it was for as it all goes against the bottom line.
I was going to contact customer support about it but ended up not because I stopped ordering from them soon afterward so any account credit they offered would have gone unused.
I didn't cancel my orders with them due to dissatisfaction and still highly regard them - they had a much better price per pound that I was getting through independent sellers on Amazon. It just so happened that the cat food we buy was no longer being distributed through Chewy.
We use the Fromm brand and they apparently only distribute through small/independent sellers. Apparently Chewy was getting too big and corporate for them. So we now found a dog grooming/agricultural store in a town about 20 miles away that keeps all of our cat's favorites in stock. They also have a very friendly and talkative furry fellow who always wants to help us pick out a bag or two when we stop in, then follows us to the checkout when we pay. Just last week, he tried to climb inside of my wife's purse as she got her wallet out.