Specialization code,help

My shipment of Halo 4 Limited Edition took longer than expected.When I got it I reedemed codes for map pass in which I was supposed to unlock all specializations on first day of Halo 4.As I know Specialization codes were given out for players having these problems,well its been more than two weeks I still didnt receive my specialization code.I tried contacting xbox live support they said they dont have the codes there.What do I have to do? Thanks.