False Billing from Fictitious Water Readings

In July/August my water meter was read incorrectly and an incorrect (very high) water and sanitation charge resulted. I proved the correct water reading via e-mail on multiple occasions since but no correction was made. I was asked for photos which I provided again and still no resolution to the incorrect billing. I have continued to pay my normal average account balance, but refuse to pay the thousands I have been billed incorrectly. For the last 4 months I have not been billed for water (probably because my meter has not yet reached the fictitious reading in July/Aug) but have still received the opening balance unadjusted and am expected to pay for. The fact that the meter reading was not corrected back in July/August and that I have now not been billed for water/sewerage means that I am not receiving my free water units of 6kl each month. I am also being charged interest every month for the false opening balance and final notice fees each month for not paying the incorrect amount and only paying the normal average. I have lodged the complaint and followed up with e-mails. No resolution - just more unnecessary charges and my time wasted. EMM service - once good - now a disgrace!