What a lod of codswallop! yes it signifies something is apparently wrong - but NOTHING, and I repeat, NOTHING to do with how you close the bonnet.
We are absolutely 100% convinced that it is do with the perfomance and realiability of the catch mechanism - not HOW you closed the bonnet!
Firstly, a bonnet may be flush, but there is no way of checking that the safety catch is deployed or engaged fully!
Secondly, the catch mechanism is a two-independently operated mechanism. If one fails that's bad luck - but both failing signifies a more sinister issue is in play here!
- accept their request and get your car seen to - see the photo on this post: http://www.renaultforums.co.uk/gener...tml#post148230
The main (springy) catch is on the LHS and the safety catch is the larger plastic thing in the centre of the photo (Right of the main catch!).
It could simply be that it is stiff and not lubricated - caused by lack of maintenance. The latter is only "mandated" following the statement from Renault dated 23rd Jan 2007 - previous to this it was not actually "looked at" during servicing.
TAKE PHOTOS prior to and after the inspection by Renault - and share them with us - to see what they actually need during the inspection. They probably just look at it and say it "seems fine". Problem is that the root-cause of the "issue" has NOT gone away. You need to keep maintaining it (if you intend to keep / use the car - esp. if long journeys are in order!), and ensure it's checked during servicing by the servicing garage! Until they issue a recall, there isn't much you can do, I'm afraid!
MOT checks on come into question (as we all know) > 3yrs - so without knowing the age of your car - it's difficult to say whether it was something missed during the last MOT or not!