Other Fuel System Pump problems of the 2004 Land Rover Range Rover

I have to replace my fuel pump two times it cost me over $2,000 and now my steering column isn't working my key won't turn I tested it by taking the fuse out and disconnecting the battery still nothing went to a current Range Rover spot and they said that's common in those vehicles with the steering column going out which makes the key not turn I hope that you guys can really resolve this situation because for this to be an old vehicle I'm spending a lot of money out of my pocket thank you.