No one answers - Even if you have a direct line no

We have recently purchased a property in Selcourt, Springs. Due to the fact that we have not yet moved in, I phone with my water & electricity readings. The bill is always in the region of R676.00 or 674.57 or R712.20 or R690.49, except for the account that was due on 07/02/2015, this was R1 581.35, due to the 3 toilets that were constantly running for nearly 4 weeks & the water reading was sky high. We closed the water & this solved the water problem. Now we get sent a bill of R1 626.00. As I said, we do not even live at these premises. I checked the account & the water amount is R0.00, as we only used 41 liters of water for the month, since I gave the last water reading. The electricity amount on the bill due on 07/05/2015 is R1 001.10. How can this be possible with only an electric fence on & no lights or anything else on. I have phoned at least 30 times or more & no one answers their phones. I have even sent e-mails to Christine Victor, Jan Botha & Reshmi Mundy & neither of them have responded. What must we do? Pay this ridiculous estimated account amount? I am disappointed with the lack of customer service, especially when I ALWAYS pay my account & early too.