From bad to worse

So Vodacom decides to get someone by the name of Nomfundo to call me regarding my previous complaint. She was extremely rude and unprofessional - she addressed me by someone else's name!! And as I proceeded to tell she had the wrong number she responded by saying \ then who am i talking to?"With the most disgusting attitude. She didn't even apologize for addressing me incorrectly. She has no telephone etiquette which begs the question does Vodacom at least train their staff?? This the second time I get someone calling me from this company who displayed callous conduct. I am utterly appalled by Vodacom."""