The Quest - Frankie the Politician

I describe my problem from the beginning. The mafia car was not unlocked but marked yellow. I had done all the quest and built buildings. I got in touch with ea in Germany, where a mafia auto employee placed in my game. I have tried several times to put the characters in my inventory, visited friends, deleted the app and reinstalled it. the ea employee said that I could not be helped, i should post my case here. does anyone have another idea what i could do?