Appalling attitude from a consultant

I have Never in my life experience such a condescending attitude from a consultant who's meant to try to resolve our issues and etc. This morning ( 23 September 2019) at 9am I went to the Standard bank Sandton City to redeem my instant money vouncher from their ATMs. I tried from this one ATM and it gave me an error message that reads: "we are unable to help you now", I then went on and tried another ATM and then I got another error message, but now it said the voucher has already been used. I quickly told the service advisor at the door. She then put me on phone with instant money, where I held for at least 50min. I hung up and asked the lady to dial the complaints department number for me, so I can complain about the wait and see if they can help me because I couldn't wait any longer. I needed that to go see a doctor. I got through to the complaints department after holding for about 1min(9:52am) and I spoke to the guy by the name of Joseph Witticker and OH MY GOD that guy was rude to me, he did not even understand why was I calling, he made is own conclusions and told IRRELEVANT things, I tried to get him back to the right track by saying "Sir can you please let me speak" and he said, with a loud register, "I HAVE ALREADY GIVEN YOU A CHANCE TO SPEAK AND I STILL SAY THERE IS *NOTHING* WE CAN DO". He was unsympathetic, condescending and rude. I then told him I want to report him for his attitude. He gave me his name with the "you'll be wasting your time" kind of attitude. He even spelt it out for me and then ask if there is anything else. I was really furious by his condescending attitude, I then asked to speak to his manager, he then said "unfortunately the manager is not at her desk". I never thought I would be reporting a complaint department consultant. Someone who was meant to be trained to help resolve internal complaints. He should go back and undergo training because clearly he doesn't know what customer service is. His service is appalling. Thank God I left Standard Bank a while back and I will convince my mom and my grandparents to also switch banks. Joseph Witticker you shouldn't be where you are with your kind of attitude. You really spoiled my day.