merlecollins
TF
I wondered if something like LPT Floorshine would bring up the dull ones?
Unfortunately not - as you got a glazed tile it will just lie on the surface of the tile and foot traffic will wear it off over time and you'll be left with something aesthetically worse than what you've got now:yikes:
To get a finish you WILL be happy with, you need to source the glossy tiles, but like previously mentioned you are in the hands of a company that probably couldn't give a hoot now they've got your money
The other option would be to lift the lot and replace with new from somewhere like Tile Giant - there's bond to be a store near you