Discovery Travel - Bad!

I am not a frequent traveler. With great joy I planned a holiday to Cape Town. My wife and I checked in early to spend some time in the Airport Lounge. I generated my Discovery Voucher. The description said clearly that I will have access and also the secondary card holder, my wife. My wife was refused at the lounge. According to the lady on duty the rules changed. My wife need to pay R300 to have access with me. Sorry Discovery, you are the worst. Even the voucher stated that I, plus one adult will have access. Does your rule change so fast that you didn't even updated your App? Bad, unprofessional!