That's really weird. That's the second time today that I've heard "I got the wrong feed" story.
Just a word of advice from experience............
always read the tag on any bag of feed.Most feed suppliers use the exact same bags with various types of feed inside, the only way to tell the differnce is the tag. Many animals have been killed because of mix ups on the feed. Just this year my feed supplier sold my special order bag of high concentrate goat feed to an unsuspecting customer, it contains high concentrates of various ingredients that will kill a cow.
Good Luck!