I sent a detector from Michigan to New Jersey and the guy didn't understand English,no one was at the address to sign for each delivery attempt.The unit sat unclaimed at the post office in NJ.The Oxford post office called the NJ office had explained they were just as concerned as I was that no one came in to pickup the package.After a few weeks the NJ orifice said that it was going to be sent back the next day and call back one more time.Anyway when I called back the post office in NJ they said the gentleman picked up the detector and they were as happy and surprised as I was.(I think they had a bet at this office weather the package was going to be picked up or not)The post office in MI and NJ did an outstanding in explaining and helping with this problem.I have had other problems but each time they have gone out of their way to correct it.