Well, they have never questioned me ....did they ask you, or did you tell them it was goats?!!  Did they give you a reason?  Cannot see what the problem was.
There again, I was refused a big tub of wormer for my large flock of hens, because they are laying hens.  Told  I must get the pre mixed layers pellets.  if I had not said they were laying hens it would have been ok!!!
I will get you a bag of dairy nuts from Argo - they are for my jersey cows of course!!