Procedure to get divorce for Scheduled Tribe member

Mai schedule tribes say belong karta hu. meri biwi nay mere aur mere family k upar DV, 498A, aur anya case darj kiye hai, maine bhi divorce ki case 2015 mai family court may dali thi lekin last year Dec.2017 ko court nay order diya hai ki (schedule tribe say jo belong karte hai wo log HMA 1955 k antargat apply nahi kar sakate) une custom & usage lagu hai. ab mai panchyat k pass jata hu to wo log bhi dar jate hai aur muje divorce dene say inkar karte hai ab mai kis k pass jau. maine net par search kiya hai ki adiwasi log hindu nahi hai to unko koi civil law lagu hota nahi hai wo apni rudhi, parmpara k ansur jivan jite hai. meri problem a hai ki. meri bewi muje bahot torcher karti hai aur divorce dene k liye bahut jada pise ki demand bhi karti hai. aur panchyat bhi darti hai ki hum aap ko kaise permission de. mai district mai rahata hu vaha par koi panchyat nahi hai to mai kaise divorce lu. kya mai ek letter par divorce ki notice bhej sakta hu