Call Agent just hung up on me when he couldn't answer my question

I have just spent an hour on the phone asking them to explain why they are double debiting me. The call center agent never told me the call was recorded and in fact it took 5min before he would even look into my account. Then he showed no intelligence in understanding my question or perspective rather he just kept reading the last statement I received aloud to me. That's the reason why I was calling because the statement is the problem, not the answer. Then finally he just put the phone down on me. (It took 30min of waiting just to get through to an agent in the first place). Also I never once raised my voice or got angry I just asked questions and was trying to work with him to find a solution