Incorrectly Cut Off for Impact Mistake

I am highly disgusted and disappointed in the fact that someone was sent out to disconnect us. My wife explained to the man that we had paid A WEEK AGO and can show proof of payment to which he wouldn't accept. The proof of payment was then not picked up by Impact Meter Office because it was sent to the wrong mail, to which I think is complete nonsense!! A call to us would have sufficed before sending someone out to cut us off to confirm if payment was made. To make things WORSE is that we had to pay R300 reconnection fee for being INCORRECTLY cut off because our mail was not found. As far as I'm concerned this is thieving!! We have always emailed that mail for out POP's and now this?? Can we not get a call or notification before hand? As far as I'm concerned this fault lies with Impact Meter and the R300 is owed back to us and must be deducted from our next bill. I will be going further with this. Now it takes another hour for the email to be received and then to still send someone out to switch us back on?! The client now suffers for a Businesses mistake? Absolutely disgusting!