UNFAIR TREATMENT OF THE ELDERLY

Discovery are refusing to pay for a certain substitute medication or any portion thereof, that my elderly mother who has COPD and depends on, which falls under her chronic medications that they do usually pay for, albeit that the substitute provided, as the generics were out of stock and this was supported by documentation from the chemist to that effect. Whilst they have paid for and agreed to pay for the generic in the past, they are refusing to contribute even that amount towards the substitute that through no fault of her own she was forced to be supp**** with. I think its disgraceful and they keep skirting around the issue and telling me what they will pay for but not the reason they wont assist with a contribution of what they would have paid anyway. Why should she have to fight so hard?