Terrible Service Delivery

I had booked international tickets via an agent and chose to go with SAA being loyal to the brand however the brand did not make the same effort . The flights booked were for 3 people myself , my husband and our son . Once the booking was done I had gone onto the website to add contact details , which was when I noticed my husbands surname was missing a letter. I called SAA and spoke to an agent who advised that I needed to contact the agent as she could not help me with the amendment , I proceeded to call the agent who advised that they were not at liberty to make any changes it would have to be done via the airline. I called SAA for the second time , waiting almost 25 minutes on the line at the call centre , I dialed a third number where I spoke to a consultant who advised that they cannot make changes to a name the ticket would have to be cancelled and rebooked which now has costed me R735 to cancel the existing ticket and furthermore R1600 more for the ticket than I had paid less then 12 hours earlier. I think the service delivery was extremely unprofessional , surely there is a way of adding 1 simple letter to a name or surname and I am expecting it to be at a cost ofcourse . It is situations like these that will prevent people from using this airline whether it be for domestic flights or international.