Believe the reviews people, as so many others have stated, Revtronic give outstanding customer service. My Toyota Auris cluster indicator LED had stopped working, with Toyota unable to help I found Revtronic after some car fault forums and internet research.
I called them on the Monday and the very helpful engineer went through all details with me. I sent the cluster to them on the Tuesday, they received it 10am on Wednesday, I got the "all done" email at midday on Wednesday and received it back by 10am Thursday, all now fitted and working and 1 very happy and appreciative customer - many thanks Revtronic!