Terrible Service

I went to get my 6 month supply of contact lenses in April 2015. I let the guy know that I have changed the medical option to the Medical savings and change it on my patient file. I get my subscription and leave. About 4 months later, I get a call from the lady who manages the accounts and she tells me the claim was rejected by the medical aid . I tell her its impossible because there were funds available in the savings. I call my medical aid company to which they confirm that there are funds available . I then called the lady back to inform her, and she says she will resubmit the claim and let me know what the outcome is. She calls me a month later telling me that I still have not paid the account.I eventually went in the store to pay cash and just reclaim from my medical aid, as well as get another 6 month supply. I submit my claims and the medical aid rejects them again. I get into contact with CAMAF and they tell me that the lady used the wrong code to claim and was still using the previous options code all along, that's why it was denied. Now I cant reclaim because the claim is older than 4 months and is now stale all because she used the wrong code! Shocking incompetence!!!!!