When a seller ignores all the smses and calls from the original number but immediately answers when the person calls from a office number is already instantly considered as dishonest seller. Ure not even taking responsibility for just $55, then why even doing business in the first place? You have sent a faulty item, isn't it your responsibility to replace the unit with a brand new unit? If you cant take responsibility, then dont be a seller at all. You will just end up cheating people in the end which u already started i guess.