becoming a **** medical aid too.....

On 17 November 2015 I had a CT scan done. As all CT and MRI procedures at hospital, the medical aid is contacted first to obtain an authorisation number before the scan is performed. The CT scan was authorised and I had my scan, which followed an admission the next day. On 21 January 2016, I receive an invoice from the radiologists - the scan was rejected by the medical aid and I now need to pay for it. I have requested feedback on this matter three times from the enquiries desk, the claims desk, the treatment desk, everywhere. No answer from Bankmed and no service. In my 14 years on this medical aid this is the first and very disappointing issue. Did service move out the door with the Discovery merge? This is ridiculous service - WHY AUTHORISE A SCAN AND THEN REJECT IT. Sounds like you are becoming another **** medical aid...