Property Mismanagement

I have been renting a house through Trafalgar property management agency in Port Elizabeth since January 2021. I have been experiencing endless issues with dampness in the walls, water leaks with me ending up with a water municipal bill of R7k and the agency only responds that they cannot do anything unless the owner of the property approves and the owner is not responding to messages, emails and is not answering phone calls. I have been sending email communications since June 2021 and every time it is a different agent responding. I have asked the agent currently managing the property and he said that there is absolutely nothing that can be done until the owner responds. Surely there must be some action which can be taken in the absence of the owner's approval. I have dealt with so many different agents and yet none of them seem to be able to sort out this issue. Yet I am expected to foot the water bill and not even using 40kilo liters of water monthly.