1. Start a new game.
2. Pay back the credit of the boss.
3. Go to room service.
4. Rent a studio.
5. Give back the studio.
6. Repeat 4.-5.
Result: The minus on your account will turn into a plus.
do not pay off the 200000$ credit to your boss.when your money goes to minus example:-630$then go to your boss and payoff all the credit then the money goes back to 0.if you have luck ask you boss after paying off for a 200000$ or less 100000$.