Received call at 4 am!  Accidentally hung up the first time since I was sleeping when the phone came in.  They called a second time.  I didn't pick up.  Did not leave a message.  

I called them the next day around 9:30 a.m.  Does not ring.  Instead, "The nextel customer you are trying to reach is currently unavailable... please try your call again later... FL.."  I called 3 times and I got the same message (ending with the error code).