As pointed out elsewhere, its definitely not just you.
I'd be almost as worried by the complete lack of communication on the stem too, tbh. Looking at the OPI stem it seems like there is more chance for catastrophic failure there than with a normal stem, and you have no idea what was broken, and what they have done to fix it. (also no idea if this affects you, but first hit in google http://www.bicycling.com/bikes-gear/recalls/cannondale-recalls-23000-opi-stems )
Its a really shit service, any way you look at it, and you're absolutley right not to accept it
As pointed out elsewhere, its definitely not just you.
I'd be almost as worried by the complete lack of communication on the stem too, tbh. Looking at the OPI stem it seems like there is more chance for catastrophic failure there than with a normal stem, and you have no idea what was broken, and what they have done to fix it. (also no idea if this affects you, but first hit in google http://www.bicycling.com/bikes-gear/recalls/cannondale-recalls-23000-opi-stems )
Its a really shit service, any way you look at it, and you're absolutley right not to accept it