Acers Timber Flooring

We had a wood floor installed by these guys.
The timber they supplied was beautiful: clean, straight, lovely colour — we were very happy.
But the installation job was awful. Basically they paid no attention to detail. Around the edges of the laid floor, ragged gaps were filled with a horribly mismatched putty. Door sills were crooked, doors were taken off and left stacked in the corner; others had the bottom of the door sawn off (since the floor was now higher) with a very rough cut and left completely unfinished; seals on the bottom of doors weren’t reinstalled; one door would no longer open without scratching the floor; etc.
Then we looked at the floor itself, and the sanding had left large circular scratches where they’d failed to do a fine second pass. The coating was uneven, with heaps of lumps of sawdust, dirt, insects, etc, in it.
We got them back to fix up the worst of it, but their efforts here consisted of more putty and using a razor blade to remove the tops of the lumps (!).
A year later, and the boards are warping, the glue has apparently let go in some places, and the hidden nailing isn’t holding the boards down: the floor squeaks, has gaps, has boards the protrude to the point of catching your toe when you walk on it.
So … by all means, get your timber from these guys, but I would never have them install a floor …