Hi,bought and paid for unit from china on the 18/11/13.got tracking number that worked,and tracked my unit to uk cumtoms lingley,where it seem to have stay,as I heard no more about this unit,only that it had been lost.after weeks arguing with the seller,they said they would refund me half the money ($830) or send me another unit.i choose the unit,and they send me new number(rc179790688cn) four weeks ago.i cannot get this number to work.the seller said it works on there end,but will not tell me where my unit is.i do not know if the... read full review »