I wish I'd paid more attention to the negative reviews for this company on various forums.
They didn't supply some parts of my order, then claimed that they had and refused supply or refund.
While I was sorting this problem out, the project was put on hold and other parts of of my order remained in their packaging after a cursory post-delivery check.
This was a mistake, because when I finally was able to unpack and fit my shower screen it turned out to be damaged. Naturally, QS Supplies said I was past the deadline to report damage and refused to replace it.
I managed to reclaim for the non-delivered parts through my credit card, but had to purchase another shower screen at additional expense from a competent supplier.
Customer services were rude and disinterested throughout.