Absolute disappointment of service and aircraft being run between Perth and Johannesburg. This is now an old Iberia plane being used on this popular route? Even the staff do not appreciate all it's problems. Incorrect head sets that do not fit this airline were given to us. Service after dinner is non existent? Same plane on return trip. No music channels for entire flight only movie channel 1 worked and the movie had a consistent horizontal and vertical line through it for entire movie on remote screens - which you can hardly see when lights are on or off. I have used this airline now 8 or 9 times in the last 17 years and seen it deteriorate to pathetic. Qantas need to set better standards than this to code share with this airline and aircraft?