Takes money for no reason

My power has just been cut again! I look at my readings in the morning and at night since you guys have slapped me with a R8000 bill for January. No response to my emails. what has happened to the R200 I have recharged with as per my previous email. Furthermore ai would like some clarification why my account is suddenly -R129 and it was +R120. I do not use that much water/electricity in one day. It is impossible!