Terrible airlines. Don't pay for anything extra or it will be lost

We had the unfortunate experience of traveling on your airline on 3 June 2023 CPT to IST to SKG Thessaloniki Not the following 1 our flight was delayed for approximately 2 hours - more about this later 2 we had paid US$796.00 for extra legroom seats 10K and 10 J but when we boarded these seats were normal seats in a 3 seater section not 2 seater as we booked. You *****ulently charged us, and misled us. At best this is in contravention of the consumer relations act. Normally if there was an error the victim party would be upgraded but we were downgraded. There were seats in business class as we were offered upgrades for R15,000 when we booked in. Nobody was interested in “our problem” 3 we explained to the cabin staff and even the manager that we had a connection allowing us 2h45 to catch this but with the delay this was now only 35 minutes. We were assured the flight had been informed and would wait for us. This turned out to be a lie. We raced across airport (not east when you are 72 years old) got to the gate at 07.17, 2 minutes late and the gate was closed. We were assigned a new flight at 18.50 which is a 14 hour wait, longer than IATA regards as normal. This flight TK 1893 was also delayed by 40 mins resulting in our reaching the hotel at 22.00 late for dinner and exhausted. Also missing one day our holiday. A few days before departing CPT we were informed that our return flight from SKG was cancelled and we were rebooked from a evening departure TK1894 to a morning departure TK1882 so we arrive at IST at 10.50 and again we have a 15 hour wait at the airport!! This is unreasonable. Also we loose another day of our holiday.