Need concrete information about my package

Made an Order since Jan. 7th,2013 through China Post to Nigeria. Up till now,I don't know where my package is and I already checked with the Local Post Office in Nigeria but there was nothing of such.
Tracking No-RB105132641CN
Order No-1102120685
Please,I need your expertise and solid information concerning the whereabouts of my package : China or Nigeria? Or is it being held by the Nigerian Customs? Am just confused.
Hope to hear from you soon.