Premium Soft close drawer box (W)800mm

The instructions don't instruct the construction of the drawers. They tell you to put runners in top holes when in fact they need to go in the bottom holes. The aluminium fold on the bottom of the drawer box hasn't be manufactured properly so it's catching on the drawer runner making it impossible the close. Drawers do not soft close. They don't run on their own when pushed.
Drill holes for attachment of drawer front don't line up.
Missing locking mechanism to the front left hand side all three drawers purchased.
We're re-doing an entire kitchen and buying three of these was the most expensive part (per item). We've not had problems with any of the IT B&Q range which is much better value. Shame the IT range is to be discontinued...