I want to dupe cars for making money but for some reason i dont have martin requesting missions. Nor do i have ron or gerald. How tf do i get contact missions to be unlocked????????????? im lvl 47. Do i have to complete a certain amount of heists? or??????????? Seriously frustrated right now. Read about gang attacks did like 5 or so, nothing. Played bone yard survival and passed. Nothing still.
*Edit* also how to bypass vehicle sell timer?