False advertising

I purchased a voucher from NetcarePlus, which from the website led me to believe was for a consultation with a doctor in your network at a discounted rate. This was not the case, when I arrived for my appointment I was informed that I have to pay a shortfall as the voucher does not cover the full consultation fee. I did this and now the doctor sends me an invoice saying that Netcare did not cover the full amount of the voucher, I need to pay more in. I refuse to pay and am now requesting that my shortfall paid at the doctor is also refunded, this is absolute nonsense and false advertising

I have called Netcare numerous times and the call keeps dropping or consultants say they will call me back under the pretext of checking my claim I will not let this go until Netcare resolves my query