Bad attitude and incorrect information

I phoned to apply for an additional loan amount on my existing loan. Been waiting for someone to take my call for 30 minutes and then got through to an agent that had a bad attitude. She interrupted and raised her voice with me within the first 3 - 5 minutes of the call, when I asked questions and demanded information. Spoke to me like I'm her child. When I asked her if I can speak to her team leader she advised me that her team leader is in the toilet and she will call me back. When I asked on which number, she said I'm phoning from a private number and dropped the call. This is certainly not the customer service I'm sure your company stands for. She gave me a name of Spho Kazi, which I doubt at this stage is correct and the team leader name of Nadiem Juris. I would really like to proceed with the application with someone more professional.

Regards GA Van Dyk