If this is a genuine failure then it's upto Renault to reply with a recall or something but if not then I am sorry to say...
It is the owners responsibility to ensure the book catch is maintained.
My previous and current Laguna bonnet catches have failed to shut securely when I myself am too lazy or negligent to provide them with small dab of grease. I'll get some pictures posted tommorow on how to do this simple bit of maintenance.
Maybe it would be a good idea for the manufacturers to include a weekly checks list for owners within their car manual just as the Haynes guys have been doing for over a decade !!
Haynes Useful Checks