Bad services and bad attitudes

I have never felt so disrespected by a call center agent to not even say goodbye and just hang up after even when i asked for her name and surname and said she will only tell me her name and its personal choice not to provide her surname. What kind of service is this? I provide full details but agents cant provide details of name and surname. Who know if she give me a wrong name as she said she is Peggy in customer services department. I called in query about the billing was i was not provided with full detail of the extra interest that i was going to get and strangely was suppressed that if there was an outstanding amount no one called me about the charges. When I asked that I get a full email explaining how the charges come about or the call to be sent then the attitude changed but when I was done talking I said thank you and good bye but she hanged up even though she was rude to say its her choice when asked if that is part of the policy rules. What kind of training is provided to the agents when they so rude. I am at a point that i would rather close it then deal with such agents when we have queries.