Need a refund and no one can help me!

I tried to purchase Electricity online with my credit card for R100 on Saturday evening (***6) and it came up with a technical error and I didn't receive my voucher yet it still took the money off my account. I have not been reimbursed that amount and today I tried to call the number that appears on the sms when you do a transaction and they said they could not help me. I was then transferred to the internet division who too could not help me and transferred me to autoserve who ALSO could not help me. Im sure you can understand my frustration by now who then put me in contact with the credit card department who YET AGAIN could not help me with a voucher number or a refund. By then I had spent R50 on phonecalls trying to get someone at Standard Bank to help me and everyone was pushing me from pillar to post with absolutely NO SOLUTION! R100 is a lot for me and now having to spend more on phonecalls and still not coming right with standard bank has me fuming! I pay monthly for service from standard bank and when I need it most they do not give it! This is not the first time I have struggled with the online facility. Someone please sort this out ASAP!