incorrect billing

on the 18th of September i called in the call center after i have been to the Avalon offices to go report a matter on my water meter. I am being billed and at the same time buying water with a tag. they advised me that the case would be resolved in a month. unfortunately that did not happen as i kept on calling for feedback and they would tell me to call the following week. 3 months down the line they send me an email telling me that my query has been resolved. i call the call center to find out what the resolution is and im being told that as per case logged readings are correct!!!!!!!!!!!!!!!!! now what makes me angry is that besides the fact that it took them 3 months to tell me this my problem is not solved still. im being billed for water that im not using and at the same time buying water every single week with my tag. where do they get the readings from because Im using a prepaid meter and not a conventional. were there any investigations done as they had said they would because if they did they would have seen that i have a prepaid meter. MY PROBLEM IS NOT SOLVED BECAUSE IM STILL BUYING WATER AND BEING BILLED EVERY OTHER MONTH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! NO ONE AT THE CALL CENTER CAN HELP ME AND IM BEING REFERRED TO A REGIONAL OFFICE WHICH I HAVE TO TAKE NOW TIME OFF FROM WORK AGAIN TO DO WHAT THEY COULD NOT DO IN THE FIRST PLACE. I HOPE SOMEONE WITH A BRAIN CELL CAN CALL ME AND AND HELP RESOLVE THIS CASE