il try my best to restrict myself in offending someone but its mandatory for me to mention that the so called "sap guru" shud realise there are millions of people far more talented and so let the ego off please and moreoever before helping others u shud try and help yourself by learning business ethics first which are basics for any business and u cud try hard first by not being rude to people. And if u feel that hanging up calls will give u an image of being an overly busy training institue then i guess its more than enough for mature sane people to not even give a rats ass to a company with such policies like your. i would repeat ,learn not even business ethics but basic sense of mannerism first befoe u even dare to speak of mannerism in your so called profile.