Not read everyone’s replies, but I’d say that you should have started the call by saying that you wanted to be on the inaugural flight for that route so you were going to be asking for unusual routing. It seems like the agent was trying to find you a “better” route based on normal requirements for an airline ticket, e.g. saving time and/or money, so perhaps more patience and a better explanation from you would have been appropriate. It sounds like agent quickly jumped to the accusation of you making fun of them because of their accent, but without hearing the call recording it’s impossible to judge.