Okay Teams, sounds like the installers didn't do the job the way you expected them to, but have they caused any problems. Did they put in steel reinforcing bars in the corners of the bays; has there been any sinking of the 1st floor bay, are there any issue other than the job not being done the way you expected.
You can look at loads of posts on here, and you'll find we respond happily to straightforward requests. Can you take the bold off please; not so easy to read the post with that on.