Well, take the delivery & complain to FIAT & TATA Motor's top authorities. Tata Motors is not his bloody group & he is just an executive over there. Trust me all his ignorance & aggression will fly away as soon as he sees a threat for his employment. You shouldn't leave it here as the guy will manage to put off quite a few potential FIAT buyers during his tenure. He almost did that to you. You do mention his comments like "we are a big group so hardly care:dance". Next time when you speak on mobile to him, record his voice:mrgreen:. Don't forget it. Since you are a latest/fresh case, take it further & could also refer Teky & Ramjn as further reference who had the same experience while dealing with him.