Momentum Health ********* behaviour not treating customers fairly or delivering on promises.

I received authorisation for a benefit on the Platform. Authorisation states:

Please note that only one tariff code (x, xx, ***, ***x) will be paid from the Health Platform benefit. So, I find a provider that uses one the codes but on submission of the claim, Momentum Health only paid a portion. Reason being above the momentum scheme rates. I had a conversation with an agent at Momentum Health on the 22nd of December, and he said I could use any provider. So, my complaint to Momentum Health is that I was not informed of any maximum amount applicable - if I had, I would have been placed in a position to confirm with the provider, as I did with the codes. I have been ill-informed and the authorisation on this particular benefit is different to the others - this was kindly confirmed by another Momentum health agent. In dealing with Momentum Health telephonically, I have been patronised, and talked down to as if I am an imbecile. I also asked for these recordings, and after numerous promises Momentum Health is now just ignoring this whole case. We live in a world of governance, ethical behaviour, treating customers fairly, how can companies get away with all of this???