bad bad problems

got some bad problems can't figure it out radio won't work, 4wheel drive is stuck in and none of the switches work, rear whipers don't work this just happened after my new front end tranfor case was put in and now noone has any idea what happened i got about $7000 in a truck and its only worth about $2000 can someone help please

Welcome to AF
We Need year make and model and what transfer case?
Who put it in?
Why not take it back and let them lick there calf over?
MT