After 12+ years as a loyal customer and approx. 60+ flights with Cathay, I am unhappily report that they have totally lost the plot re: the condition of their aircraft, management and service. I just arrived back from a Business Class flight Sydney Hong Kong return for which I paid $7467 AUD. The inbound flight to HKG was OK but my seat was filthy with dirty used tissues stuffed down the back of the seat, in the pockets and sticky mess covered the table/bench area. The return flt was a sad joke with an ancient A330 where my seat was broken leaving me with chronic back pain after the 8 1/2 overnight flight. I was assuredthat I would be contacted by the airline as I lodged a serious compliant on the aircraft including a request to inform the Captain. The Entertain system was a pathetic joke and overall a terrible experience with still no response from Cathay. I also have a bunch of 'Marco Polo - Asia Miles' Points which are virtually impossible to use to upgrade or use for flights. Shame on Cathay and they should be downgraded to a 2 Star level.