Wiring problems of the 2017 Dodge Durango

A vehicle that was previously bought back due to the engine and console shutting off while in operation was sold to me by bill luke Dodge in phoenix, az. I was informed that this problem was fixed and that it had been analyzed at a facility for months prior to being put back on the market. When we went to test drive it the salesman did explain that it had been difficult to start, but further explained that the shop would fix any issues prior to it being turned over to us. He stated it was a dead battery problem. The engine light was illuminated. Later that week we were delivered the vehicle and insured that they could not find any problems. This was may 1. On may 3, my wife drove to a local business, and when she returned to the vehicle, it would not start. When it would finally start the engine light was on, and it stayed on for two more cycles of the engine. This happened on two more occasions. On may 6, when the problem occurred again we were able to drive it to a local auto shop and have them run the code. The reader diagnosed that there was a u0100- "lost communication with the engine control module". I drove the vehicle for service on may 7. Over the course of the next several weeks the service personnel have discovered numerous loose wiring harnesses, though they still have been unable to completely remedy the issues. This issue has also been referred to the better business bureau.