City of capetown water works Terrible service Eersteriver/kleinvlei

Firstly I am writing in behalf of my 61year old mommy and daddy,I don't know were ti go or who to turn to but all I know is they need help and this matter. EVERY single month my parents water bill is over R2000 a month they dont have a bath in house only shower I do there laundry every week.tge have been to city of capetown water department but no luck they can't tell them why or how.and fir me this is wrong they living there last years with so much stress and try and pay this amount every month and do them short but I feel if this matter can just be investigated or help from city of capetown nobody comes and reed water but they give an estimate of over R2000every single month and as the daughter of my parents I now had enough if seen them suffer this much so can you please help or do something