Bad batch and waste of my money

Bought a 2kg hypoallergenic karoo cat food for my cats, it really helped with their sensitive skin. Decided to buy a 4kg hypoallergenic after the 2kg was done, since I was so chafed with the 2kg. I immediately noticed that the color was not the same as the 2kg I bought. Didn't worry too much about it, after 2 weeks of using this on my cats, the cats skin allergy got so severe that I had to discontinue giving it to them. They started vomiting on the daily due to this batch of "4kg hypoallergenic" also they were constantly hungry. Really dissapointed in Montego for doing this. Will not be supporting this brand at all anymore.