Tata Memorial Hospital — Medicines not provided by the hospital

My mother is suffering from lung cancer and it is at stage 4. But as per latest cect chest it's recover as good as previous report. So the medicine was prescribed by the doctors was end on dated 12/03/2020.
Due to this total one week gap is occurrd till date. But hospital management not cares. We obtain doctors prescription on dated 11/03/2020, on behalf of this prescription, the prescribed medicines not provided by the hospital, medicine name is tagrisso (Osimetribe). Please provide me medicines on urgent basis right now, if something goes wrong due to my mother not getting medicines, then the hospital administration will be responsible.