RUDE AGENTS that shout at you and ask personal questions

Nimble is handling my debt with regards to my account. I am unable to make payment as I am unemployed. I have expressed this to them many times and I have remained cordial and quite pleasant with every agent that calls me. I really do uinderstand that they are just doing their job. Today an agent named Andiswa called me and she was asking me personal questions like how am I surviving if I got no money. I was getting frustrated as it was getting highly personal as she kept saying I must get a job and make a plan to pay my account. I said to her that I am doing that but at the moment there is nothing more I can do. She kept asking me questions and I expressed my irritation with her persistance as she was being rude. She then proceeded to shout at me in Zulu saying that I need to pay my account and everyone is going through their own thing. She responded to her in Zulu and then she put the phone down. This experience was so unecessary and stressful. How does one get to that level of being rude to a client. If you want people to commit to paying their debt, you cannot be shouting at them and interogating them with highly personal questions. Nimble needs to consider their approach and consider the type of training they give their agents that allows them to treat their clients in this manner. I have expressed many times that I will be paying off my account once I am employed or have finances to do this so I am struggling to understand why I am i getting shouted at by an agent? This is sick behavior.