I write to express my great disappointment with the treatment we received on my recent flight No BA 256 from Delhi on the 19th December 2023. I have been a member of BA Exec club (No. 22816973) for several years and regularly flew both on the shuttle from Manchester to Heathrow as well as to Madrid during the 1980's & 90's and also on long haul to New York and always found the staff excellent. However, this was not the case on this flight, the first problem was the extra legroom I had booked for our party including my wife, Patricia Fazackerley. We discovered that the plane had been changed from the original type and the seating arrangements differed, but I was not informed of this even though we were advised at check-in that we did have the correct seats. After discussing with one of the attendants I went forward to attempt to solve the issue with Julie the flight senior attendant, who was having a torrid time with a young foreign lady regarding the Velcro on her seat, after a while I managed to advise Julie of my issue and she agreed that this needed to be addressed and stated she would discuss this with your team at HQ. Fortunately, one of the friends we travelled with offered to change his seat allowing my wife to move to a seat next to an emergency exit, which I was under the impression should not be allocated to passengers needing assistance. Once I had returned to my seat I raised the inflight screen which immediately fell down and struck my leg, with this I returned to find Julie to report this and she accompanied me back to my seat and saw to her amazement that the screen did fall down without any interference, she tested the arm of the unit and agreed that it was indeed unstable and advised that the problem would be reported to an engineer to be repaired. I also agreed that this should be classified as a health & safety issue. At this point I gave her my email address and she assured me I would be kept informed; this has not been the case to-date. Again, I discussed with her about being relocated to extra leg room seats to which she stated that she would only up-grade my wife on her own to a better seat knowing full well that my wife would not accept this as she will not travel alone. All the problems would have been resolved at that point if she had agreed to move myself & my wife as that would give my wife the leg room we had paid for and our friend would have return to his own seat and myself from the defective seat. Later I noted that the young foreign lady had been up graded which goes to show that an English man being polite did not have the same effect as a foreign person who continued to create a fuss. My problem did not end there as when our meal was being served the screen once again fell and struct my leg for a second time which ended up being bruised and this was witnessed by a member of the cabin crew who reported it back to Julie. After a few hours the captain came to our seats and took hold of the screen and implied that I was making the whole thing up and even stated that Julie felt that I had moved the screen myself causing it to fall even though I was standing behind her at the time it happened he even stated that the young cabin stewardess had stated that I again had interfered with the screen causing it to fall. I was getting very annoyed by this time and my fellow guests confirmed they had witnessed the incidents. The captain continued with his accusations until I pointed out that a section of tape had at some time been attached to the screen arm to prevent it from falling (see pictures attached) I did have to agree with the captain that whilst he was with us the screen did not fall and I put it to him, could it be due in some way to the pressure in the cabin at 35,000 feet. Following this he took a different approach laughing and joking and suggested a couple of bottles of Champagne would help resolve the issue, I disagreed but the captain was then called away by a member of staff. On leaving the plane at Heathrow Julie offered me a white plastic bin bag containing two bottles which I declined suggesting she gave them back to the captain as I did not feel a bribe was in order, however she insisted, and my wife took them and advised that they would go to our daughter. The ironic thing was that going through security we were advised that as the bottles were not in a plastic sealed pack they would be confiscated. I explained that they had been given by the pilot as a gesture of good-will but was advise that all BA staff would know that they would not be allowed through without the correct sealed packaging. (picture attached) so what was the point. I am at a total loss as to why after all that happen that we could not be compensated by up grading to the business class which had numerous seats free. Please could you advise what remuneration you are prepared to offer in order to put this awful episode behind us. Your sincerely C Fazackerley