Lack of Service and Understanding

On Saturday 24.01.2015 I had blood tests done as requested by my specialist. Upon completing the request form the capturer advised me that there may be issues with the billing as he does not think the medical aid will cover the costs. I then advised him that I had already called the medical aid and all was in order, providing a reference number as well. They did take the blood samples and advised that the tests will be on stand by until they can get authorisation from the medical aid. Since Monday I have been on the phone with Lancet trying to resolve this issue of getting my results to the specialist. They now insist on me paying cash! My medial aid has yet again advised that the tests will be paid for to which Lancet has deaf ears. The medical aid went into their records and nothing was submitted for payment!!! How then can Lancet say that the tests are not covered??? Nobody cares to call back with feedback or even tries to lift their so called restriction. I am pregnant and these tests are screening tests for the health of my baby and myself. I am terribly disgusted with the service I have received and need to know how to resolve this.