We just don't have a break

After downsizing the cat population at our house, Sunday Sahara found 3 screaming newborn kittens in the horse trailer. They were being swarmed by ants. Like a SCIFI amount. It was bad. But no mother for them has showed up and we got rid of our lactating mama cat. The shelter wont take them and every vet I call give us a new number for Furry Friends who say they are so overwhelmed as well that they can't take them. I really need to just put them out of their misery. They have been without milk for at least 36 hours now. They are only a week old.
:(