Claim not processed on app and no assistance thereafter

In 2018 I submitted a claim for a dental procedure which I had undergone, via the Momentum app. After receiving no feedback or assistance on the claim whatsoever, I contacted the claims dept where I was given the run- around and requested info which was clearly stated on all the documentation I submitted. I got despondent after feeling like I just was not getting anywhere and just gave up. In 2019, when I filed my taxes, I mentioned that I had paid for my own dental procedure, but SARS resisted proof that my medical aid declined to cover any of the bill. In November 2019 I explained everything I had gone though to a Momentum consultant and requested a simple letter from Momentum stating that they didn’t not cover the amount. I was assured that not only would I receive such a letter, but that the claim would also be processed as though It was done in 2018, and I would receive the max funds from my health saver. It is now 16 Jan and NOTHING has been resolved. I was advised that the person who this has been escalated to is on leave, which is just completely unacceptable. I’m frustrated, exhausted and after following-up at least 20 times, I have wasted tons of airtime.