Agent tells me to watch my tone.

I am very much in shocked that Nedbanks Customer Service has become so bad.. I was trying to help my mother retrieve an international payment that she has been waiting for for nearly 2 weeks, she got passed on from consultant to consultant with nobody willing to assist her, I eventually took over the call to assist her and was told by the Agent Vuyisa that she does not like my tone??? Never in my life have i been told by a customer service representative that they don't like my tone and then she drops the call in my ear.. I am so grateful that I made the choice years ago to move to another bank.