Never Flying Etihad Again - owed money and not sure I will get it back

During the beginnings of the Iran-USA bombing, I was stuck in Dubai trying to get back home to get to work. I booked two separate flights out of AUH and put a total of 3140.15$ on my credit card in a desperate attempt to get home. Both of these flights ended up getting cancelled, and I ended up getting a flight out of Oman and avoiding UAE airspace entirely.

Fast forward two months later, and I have spent nearly 200 minutes on the phone with Etihad customer service over 5 separate phone calls to ask about my refunds. I provided supporting evidence with credit card charges, boarding passes of the flights that were cancelled, and the case numbers that were given to me when I processed the refunds in countless emails. The first time I called they said it would take 15 business days for the refund. The second and third time I called, they said it would take 45 more business days for the refund. When I finally got *some* money back, it was only for half the amount (~1400$) and not the full amount I was owed. I called the representative for the fourth time and they said they would escalate this and call me back in 48 hours and that I was owed the full refund. Fast forward to today, the fifth phone call to customer service, and the representative said that I may now not be eligible for the full refund and that he would have to "convince" the refunds department to look at my claim. The reason behind this reportedly is because I processed a refund through the website and not by calling them, but at the time of the bombings I could not reach anyone due to the high call volume and instead did the refund through the link provided to me.

I asked to speak to a manager and he said there was no one available, and instead gave me the same spiel about how he will have someone call me in 24-48 hours (this is the 2nd time I've heard this).

TLDR: I am so frustrated and don't know what to do anymore. I am owed nearly 1300$ by Etihad and now its not even a guarantee I will get that money back. After nearly 200 minutes spent on the phone with Etihad split up after 5 calls, I have only received a partial refund and don't know when or if I will get the full amount owed, even after I submitted credit card statement, boarding passes and booking numbers. Completely lost trust in Etihad, and they won't get my business ever again.