Patetic service - AutoServ department

Standard bank is the most useless bank this country has! On the 13th November, i purchased R500 prepaid electricity at the Atm. The money went off my account but I did not receive a voucher number. After contacting Std bank I was transfered from pillar to post. Eventually I spoke to a ver rude guy who cut me off. I then called back and spoke to another who promised to call me back with an answer but never did. I called back spoke to another guy who then told me my query will be sorted in 48hours....after more than 48hrs I dont hear anything from them. I contacted them again today. They lady said they are still invegtigating the matter and has NO idea when I will have an answer about the money that has left my account. Every single person I have spoke to at the Autoserve department has been unhelpfull, unfriendly and completely useless. My only question to them is When will the matter be resolved? Will it take 1 week, 1month, 1year or 1 decade? I am seriously going to change banks as they are by far the worst bank ever! They had many issues with their ATM's on the weekend and will not admit that but instead treats me like Im the crazy one.