Having a hard time finding ambulance services for my mother here

She’s bound to her bed now, unable to walk and needs to get her primary doctor and nephrologist after a hospitalization. She 50 with Medicare A and B but keep getting turned away or find myself going in circles. Who can I contact for assistance here?

She needs to be brought to 2 visits and back home.. anyone know a company? A program I can contact? I feel helpless 🙁