Metro Prepaid Water, Problem with meter .

We purchased a meter and have found that the meter allows a negative reading. ie it allows water to be consumed without payment! When the matter was brought to the attention of Metro Prepaid Water, they advised that it was a valve problem and it would be fixed for R1500. The meter had been installed in rental accommodation and the fault was identified after the tenants had moved out. The bill for the water had to be brought UpToDate by us. Beware of the issue before buying these units as the problem is not made clear to the purchaser.