Hoarder Cats

I run a licensed small animal rescue and I and another small rescue were made aware of a hoarding case in a near by town. Not aware of the severity we went to check. It was a very dire case and immediately we removed 8 cats, kittens and ill cats first. That was all we had room for. We got those cats vetted and tried to place them into adoptive homes or into other rescues or shelters so we had space to rescue more cats from the house. I rearranged a bit and went back for 3 more. 2 were spoken for and that made room for 2. Fifteen cats have been spayed/neutered, vaccinated, debugged and are now getting daily care and it's not inexpensive on top of the cats we already have in our rescues. It's difficut to count the cats that are left because they are skittish but I've counted 11 at one time and there could be more and we need to get them out of this house. It's not a healthy environment. They live in foot deep garbage and their own feces. It's also getting cold and there is no heat in this house. We need funds to care for the cats medically, their daily needs and last resort to purchase cages to be able to squeeze the cats into any space we can find before freezing temps hit. Any help would be greatly appreciated by us and these cats living in squallor.