Customer must pay for poor service from Vitality when booking a flight

I tried to book a BA flight using my Vitality discount. The web interface for the BA flight is currently not available and customers are told to contact *** or *** if you are not traveling withing 7 days. So I send a mail since I was not traveling within 7 days. The price for the flights was R1910 (including the 30% discount) when I contacted them. They then provided me with a quote the following day for R2788.

When I contacted them, they said they can only provide the price available when attending to the booking and "..apology for the inconvenience". If I knew this upfront, I would have paid less for my flight if I did not make use of the Vitality discount and booked straight using British Airways.