Vahan, I would expect KHT to respond like #2 any other way amounts to unprofessional response. OK, I’ll check the bill / details and get back. If any error has happened, rest assured that it’ll be taken care of as we believe in long term relationship & would like you to come back to us. If there was no error, I’ll explain you what are the charges for. Had you raised it and brought it to my or senior staff attention instead of SA, this inconvenience to you could have been avoided.