2014 BMW 750I Structurebody Problems

DRIVER SIDE DOORS SOMETIMES WILL NOT OPEN FROM THE INSIDE WHEN USING THE DOOR HANDLE FORCING ME TO RESET THE AUTOMATIC LOCKS FROM THE CENTER DASHBOARD CONTROL. I BROUGHT IT TO MY BMW DEALER AND WAS TOLD THAT DOOR CABLES CAN STRETCH EVEN WITH NORMAL USE AND NEED TO BE REPLACED AT A COST OF $580. I HAD A SIMIALR PROBLEM WITH PREVIOUS 2012 BMW 7 SERIES AND ONE ONE OCCASION I HAD TO DRIVE HOLDING THE DOOR SHUT UNTIL I REACHED THE SERVICE CENTER. I ALSO HAD TO REPLACE A HOOD CABLE ON MY 2012BMW 750 AS THAT CABLE FAILED AS WELL AND I COULD NOT OPEN THE HOOD. THE PROBLEM WITH MY DOOR IS INTERMITTENT AND MY CONCERN IS THAT IF THERE IS AN ACCIDENT OR FIRE I MAY BE TRAPPED IN THE VEHICLE IF I AM UNABLE TO QUICKILY OPEN THE DOOR.. BMW WAS UNWILING TO COVER...