Unacceptable behavior

I received a call from a Moses Mo***eng. The consultant Started by lying to me that he called me and that he has sent a credit note. I have no idea what he was talking about. This consultant doesn't even want to listen he only cares about amounts that he cannot justify how they came about. He wants to to accept amounts to be correct when I feel they are not. I won't tolerate such abuse from your consultant that doesnt even have telephone etiquettes. He is rude which then made me to be rude. He doesn't know where the problem started . Cell C All I need to know is how much should I pay for the data I used between the 1st of April until the 9th. That's all. I won't tolerate abuse from your consultants