Very dissapointed

Very dissapointed with their service. Car been there for 2months now via insurance. Insurance booked me rental car for 45 days and due date expired, returned the rental car. Its been two weeks now without a car and been calling savanna almost everyday but cant get the car. They promised to give it back today 06May and now they telling me i cant get it until Monday. My plans are ruined again for this weekend