My range rover sport 2015 model driving for nearly 56 miles when the d for drive on the dash started to flash on it then started to lose power.got it to the hard shoulder then it shut off at this time the battery low came on the dash and the car was as If the battery had drained.tried to restart with only getting a wee noise coming from it but not turning over. Recovery guy came put jump leads on jeep tried to start but was as if lack of power it was just shutting down saying battery low. Left it with recovery company who called a few days later to say there view was engine seized as they were unable to turn crankshaft. Long story short got my own mechanic out to see it he got he crank shaft moving no issues put in new battery its trying to start but sounds really dry all belts turning but just not completely starting. Any help would be aprreciated