A week is too long for the elderly to be without a landline

My elderly mother's telephone has not been working since Monday 9 September when she logged (reference number ***9). My sister has been phoning Telkom all week to get the fault fixed, but to date, nothing seems to be happening and my mother is without her landline. My mother lives on her own. She is not tech-savvy and relies heavily on her landline. I am worried that if she has a fall, there is no way for her to call for help. Please fix her landline immediately