Nissan route 46 totowa new jersey I need my money back

I just brought a car from route 46 nissan totowa n.j by fineness & put the down payment $1,600.00. but next day I relalize this interest & including everything too much for me. then next day I went here to give them car back retuns but they don't wanna talk to me, day after day I went here trying to talk to them,but nobody talk to me, I'm try to reach by phone but nobody pickup my call..

then 4th day I went with my friend ,he findout the big boss & talk with him, he's explain my secutions. big boss agree to take the car back but he didn't give me my money back Whatever I put the down payment..

I'm a day worker my all family depend on me, this 1,600.00  For them nothing,but for me something ..coz If I wanna earn this money I have to work 2 month.

so,I just want my money back whatever I put them down payment.