seattle visa office file pending sence 23 months

[hemanteast]

i got nomination feb 10 2011 . igot my file number or medical 25 october 2011 medical done 26 october 2011 then 9th feb 2012 my file transfer buffalo to seattle for expetide my process then document request 9th jully 2012 .document submitted in seattle office 31 august 2012 after awiting waiting pl e help me guys if any one have same situation what should i do . i got mail from seattle 27 0ctober 2012 they are doing now your medical extenting process when they got aproval from canadian medical otawa then they contact me they ask my wife xray again she done xray 1 nov 2012 but still almost one and half months over i have no news from seattle ple help me guys ple share buddy