Pathetic Service from Standard bank Consultants

I made an online purchase using my credit card which went off on the 9 Dec 2017. Entered the otp once but the transaction went through twice on my credit card. Upon seeing that I contacted the store and they informed me that they did not receive any extra payment and I would need to contact my bank, which I did. I called Standard bank on the 19th December 2017 and explained what had happened. Which mind you, is a fault on their side for allowing the transaction to go through twice when the otp was only entered once. They asked a whole lot of questions and said they would sort the problem out in 7 to 14 working days. The transaction was not reversed, nor did I get a call from Standard bank. I sent a few emails and received replies that I would be contacted by a consultant within 48 hours but that never happened. I called again on the 10 Jan 2018. I had to explain the entire problem again and go through all the questioning again. This time I received a text with a service request number and was told I would have some feedback by the 15th Jan. Unfortunately I did not receive any feedback at all. I called again on the 15 Jan giving them the same service request number and the consultant couldn't help me and was told I would be contacted within 48 hours but I still have not heard from them at all. I called again today, 29 Jan... this time I gave them the service request number and all the consultant said was that she was checking and double checking the system, asked me for my ID number and then cellphone number... but she couldn't give me any feedback with regards to my problem. I eventually asked to speak to someone higher, I was put on hold and eventually cut the call, tired of waiting. I'm so frustrated trying to get Standard bank to sort out a problem on their side. Just seems like they don't even care that there is an issue.