You need to get on the phone NOW to the courrier, if not and it gets lost and sent the the recovery plant, its gone forever, trust me. I have had a package disapear from all records from trying to find it for so long
If it was processed in Jacksonvilled today, you should easily have it tomorrow. The few times I've had shipping problems with USPS, more than one has been when Florida is involved, wonder why? But its happened to me a few times if I recall.