We're truly sorry about your experience and did attempt everything in our power to get you sorted.
The chair you originally ordered was part of a whole range that had its delivery set-up changed from free next-day delivery to free engineer set-up, which takes longer. Unfortunately, a tag was left on the 1 product in the range (which you purchased), which meant it was still showing as next day delivery. Tara did everything in her power to assist and because you needed a chair so urgently, we sourced one from a reputable supplier (drive), who had stock of a suitable alternative, and as you say, we will always go out of our way to try and help when things go wrong, so in this case we paid £85 extra to our supplier to get you the chair there on a Saturday delivery. Unfortunately, something went wrong with the supplier's courier in their end, and the chair did not make it there on Saturday, which we acknowledge must have been extremely frustrating given the previous issue with us finding the alternative chair for you. We hope you've sourced a chair successfully now and again apologize for this error.