Emfuleni SW5 sewage overflow in our gardens.

I am just at a loss. I pay my bills diligently, but when I have a real emergency I don't get any assistance. Since Saturday the sewage has been overflowing in my neighbor's yard. Since Monday we are not even able to flush our toilets and now our drains are about to overflow as well. I have dialed every number I could get, but all the mailboxes are full. I have sent Telegram messages and WA messages, but I don't get any reaction.