3 Different dogs all vomiting Montego food

We have 3 dogs, an old Beagle, a Spaniel and a rescue Dashund. We have been using the Montego Monty & Me dry kibble for about a year. We generally buy the bigger chunks but since our Beagle was having trouble chewing them even when mixed with hot water, my husband bought the small chunks. Since we've opened this bag, all 3 of our dogs have been vomiting. Initially it was first the Dashund, a day later the others started. It's not immediate, but within about 2-3 hours of consumption it starts and all of them are vomiting undigested Montego chunks. They seem to all look incredibly bloated before the vomiting commences. . I am so disappointed and angry. All I've done all week is clean vomit from carpets! Thanks for wrecking our carpets!!! It's only when all 3 started vomiting that I did a bit of investigation and realized it has to be the doggy pellets. After reading the number of complaints about same, I'm convinced. You'd better hope none of them suffer any secondary problems.