Incompetence of Medishield Medical Scheme

Regarding an account sent to Medshield for reprocessing. At 1st we are informed that the claim has not linked to the authorisation, then after numerous calls made to the scheme, we are informed its 'under investigation'.. This is ridiculous because when querying this account again on the 13th of April, i was informed that they still have not captured the correct account. This has been ongoing for months. The account is still not settled even after regular follow ups. I have requested a call back last week and Thursday from a Team Leader or someone of competence, that call is still to be received.