I believe I've made apt justification on this person's profile with a neutral comment. Sellers like this simply expect people to be around carousell at the ready to reply to his whims. As I've said in my feedback for you, kindly note that people have a life, commitments, work and school and not replying you just for a few hours is NORMAL. In fact, how one survives in society is not wasting time on this application waiting for fast replies, nor getting immature as one does not reply you fast.