Cancelled Flight without Reimbur*****t

Flight DL201 from JNB to ATL on 4 June 2025 was cancelled as I arrived at the airport to check in, the Delta help desk was completely swamped and all flights on their app, to Atlanta, was basically sold out, as everyone was trying to change or find flights, I had meetings in Atlanta on 5 June and had to get there ASAP, and seeing as the replacement flight was only on 7 June, I would have missed all the meetings, that were extremely important to my career, I then had to spend around $2000 on the spot to get a one way flight to Atlanta through United Airlines, I phoned Delta whilst in Atlanta and they assured me that they would reimburse me for the cancelled flight and possibly reimburse me for the costs related to their flight cancellation, but that I should contact them when I am back in South Africa and everything could be sorted out. I contacted them on 12 June to start the process of getting reimbursed, it is now 6 weeks later and I have not received the $1000 for the cancelled flight and was told that I would not get any reimbur*****t for the $2000 their flight cancellation cost me. At this stage I probably won’t be flying Delta ever again although I will be going to Atlanta every year in June.

Here are my 2 customer care reference numbers 14152624 14152872