Kittens in attic without mom (Spring)

Can't get to them. Haven't seen mom and have waited for her and have been watching.

I'm on my 3rd attic critter removal company, talked to 3 rescues so far, can't reach 2, called SPCA, 2 local vets.

I'm afraid they're going to die. I can't reach them as the area is so tight. Located near Klein HS.