Dangerous rocks and debris

The m40 central reservation has additional rocks and debris than any other motorway I have driven on. I use this road for work daily and have had to replace my windscreen 4x this year due to rocks coming off the central reservation area and into the road, causing cars to swerve and potential accidents to occur. My windscreen was replaced 4x due to the cracks being so large. The central reservation north and south from High Wycombe to Oxford has no grass and is full of rocks and debris larger than 5x5cm. This has been an issue for the last year, many colleagues that also use this road have reported abnormal amounts of debris and rocks flying and causing them to change their windscreen more than usual/ on other roads.

Please can something be done to clear the rocks and debris and prevent any more damage to vehicles and potential accidents occurring.