Power Steering Failed problems of the 2015 Jeep Renegade

For the fourth time I took my car to the service at the dealer , and for the fourth time the same problem occurred received a 'service power steering' dashboard message. . . . And the vehicle has no power steering. I have 20,000 miles on my vehicle. After I leave the car for two month in the dealer finally they call me and said my car was reedy as today March 2018 but continues with the same problem . I am of course concerned that my power steering could fail while I am driving the vehicle could cause serious accident. This happen one time already, I'm very frustrate I don't know what to do this point. If some could help me or indicate what to do thanks. Same problem here- except total loss of steering while on highway. Numerous electrical issues, 7 total since 2016, 16 days and counting in service bay and not driveable. This car is a nightmare. Dealer service they don't know how to service.