1 star, this is generous. We recently used QS supplies to buy two sets of valves and a mixer tap for our new bathroom. The valves arrived within a reasonable time frame, the mixer tap was not included in this delivery and no packing or dispatch note was sent with the delivery. We initially didn't query the missing tap as the order confirmation stated that some items may arrive separately. A week later, the tap still hadn't arrived so I contacted QS to see how much longer it would be. It took a while to get through to them by phone, to my surprise they said they had sent it in the original delivery. I explained that there was no tap in the box and we hadn't questioned it earlier as they had advised items may come separately and there was no delivery note to check it against. I was then informed they'd look into it and call me back within a couple of hours to update me. This was the last I heard from QS, I never received a call back and we tried to contact them several more times without success. Fortunately, we had paid through PayPal so raised a claim with them. QS failed to even address our PayPal claim, providing nothing more than the tracking number for the parcel that we had acknowledged had arrived. Luckily for us PayPal ensured we were not left out of pocket and we were able to source a different tap from another supplier. In short, QS are quite possibly the worst company I've ever bought from and I will never use them again.