We recently experienced problems with sealing the bags from PBFY, due to misaligned seals but due to expediency and need, muscled through their use, which reduced our productivity. On the next order, we spoke with them personally and explained the situation. So far, the bags from the newest shipment are performing well, and we did receive follow-up contact from them to make sure they were in good order. It would have been nice of them to give us a discount on our later purchases due to inconvenience, but I imagine that would have happened only if we had complained earlier than we didi and offered to send the bad bags back. Unfortunately, due to orders, we didn't have time to research and source another company, nor were we inclined to sift through the entire box, and through each bundle of bags looking for the bad ones. Since they did follow up, we will continue using PBFY as our bag supplier.