Elevator not working since Wednesday

I live on the 7th floor in nycha. They put a notice that because of con ed low voltage with the heat our elevators will be out but yet the elevators are working in other buildings I don't get it. If it's because of con ed wouldn't they all be out? I myself don't mind but I have a child with a disability that started her mandatory summer school today and she physically cannot walk up all those flights. Nycha told me to call the office cause legally they have to provide a portable stair climber,I did n no they don't have one. They said call the fire department or ems which I've done in the past and they've told me it's not their job. I've put in tickets n emailed n called the senators office n nothing. Anyone know of anything else I can do?