Owners/service Manual problems of the 2015 Honda Odyssey

The van has power sliding doors. Ever since it was new, we have had problems with the doors not closing. We have been told several times by the dealer that it is because we live on gravel. I finally took the van apart myself and found that the rubber coating had come off the cable that closes the door and bunched up and would let it slide freely. I bought a new and within a month it was doing the same thing. The coating was coming off. We just took it back to Honda and were told again it was dust but the coating is coming off the other side and jamming it up too. My wife hit a deer recently and this is where the problem is. The power door wouldn't slide and when you put it on manual mode which shuts the doors off, it won't slide either and my wife had to climb over the front seat and get my son out of his seat. If this was an emergency situation I don't know what would happen. Worst part, my wife says that it has never worked and she asked Honda about it and they said it was because we live on gravel. Now that our warranty is up, they want to sell us a bunch of new parts. I just ask that someone look into this problem because of the safety factor. I consider myself to be pretty strong and I can't sit on the inside the van and force it open so I don't know what my kids would do if something happened to my wife if there was an accident.