In July 20, 2024 Delta had multiple cancellation of flights from Dallas to Heathrow. At one point they advised me to cancel the flight and book any other direct flight with BA so I don't miss my connection flight. I did book my flight with BA but when I asked to give my luggages, they said it's already on their aircraft so they would deliver those to my address later. I flew back to UK with BA and a week later I received all my luggages from Delta. However, all the luggages were broken and when I claimed that with all the details, they denied to give compensation as I flew with BA. I explained repeatedly that BA didn't carry my luggage and I had the proof that Delta delivered it but the call centre kept telling me the same response that I had to go back to BA!!!. It looked like AI generated responds, no human bothered to come back. Since then I had made multiple complain through their websites and no responses at all. There are no number I can contact to their complaints department. Honestly, this is the worst customer service I have ever received in my life. Be careful, there are plenty of airlines out there and don't need Delta ever.
