Goldman Sachs Software Developer interview questions

HR contacted me from UK. After that, I had a live coding test with a very young guy who doesn't even know javascript. It was more like teaching the guy than having a test. The guy doesn't even know how my program works although it was a few lines of program and I think he wanted to show that he has strong tech knowledge and he insisted that there will be performance issue on my program. His knowledge was really ridiculous. I didn't want to argue with him. Hence, I requested for performance comparison bewteen my program and his answer but he refused and seemed pissed up because of his hurt pride. I realised that he is from Hongkong office and didn't expect the next interview even though I completed my program perfectly as I know that he hurt his pride. Goldman Sachs, please send an experienced person for coding test like other companies and hire the guys who have good attitude. This is my worst tech interview in my life and got to know about how bad tech guys are in this company.