Stay away from Impact meters

I received a sms that stated I owe Impact double the normal usage amount. Not believing the amount, I paid the normal amount. The next month the bill did not even out as expected and I had to pay in an enormous amount, which I am not able to double check as all the meters are locked by Impact in the security complex. Seems like we work on a trust basis here. The next month I received an even greater bill with an increase in deposit of 200% my monthly usage making the bill 300% of the normal payment. Now, my only option is to convert to prepaid which is more expensive with an additional installation cost, or pay the increase in deposit I have no say in. This is not treating the customer fairly. There is not transparency. Seems like I need to purchase another meter to determine if my usage suddenly increases or if Impact made a mistake. I am just glad I am not in a financial crisis as they really know how to kick a customer when they as down!!