thanks for your advise
let me answer back your question
the parcel A,B, C is bought from same seller,
the parcel A,B,C is ship in seperated time, i first buy parcel A then few day later i buy parcel B, then a week later i buy parcel C.
this 3 parcel is using normal Interenaltion USPS shipping, where i have 3 US local tracking number and this 3 parcel as i check is already exit US,
Parcel B and parcel C i already receive, only this parcel A i haven receive,
that make me headache, i suspect it been hold by the kastam, maybe they cant find my contact number and gone wait a certain period send out the letter to me in some situation the letter haven reach me.
now what crash my mind is, the parcel A now is already eat up by kastam,pos or it really under hold by kastam.
but FYI this parcel A is in a Big Box size compare to the parcel B and C where they just a small package.
i wonder is it for those boxes shipment will took longger time then normal small parcel size