Electricity *****

I bought Electricity online on the 8th of July, voucher was faulty.Called City and they told me to call bank. I asked for a refund as the voucher was not meant for my own use but for my mom.They sent me a new voucher on the 9th of July which is also not working.Since then i was told to call Autoserv but this number keeps saying that the network is congested but I am making calls fine to other 0860 numbers. I called City of CT again to see if they can assist and they dont even have that voucher number on their system!! Now this sounds like ***** to me!! I was ****** of my money and the electricity and nobody wants to take responsibility. Standard Bank you suck!!