Admin fee for correcting a typo.??????????

I Made a booking online for Fiance for our honeymoon as a surprise. In my excitement I used an abbreviation of her name that she goes by. after getting my booking i realized my mistake and called to get it fixed. They want to charge me R300 for correcting a typo.!!!!!!!!!!!!!!!!!!!! I asked them what the money was for? They said it was an administration fee. but if i want i can do it myself online. But that will also cost you R220. So by doing the work myself, I still have to pay admin fee... even though i just did the admin.!!!!!!!!!

I not trying to change passengers, its not last minute, the flight is in 2 months. It should not cost me money to correct a typo. This is beyond ridiculous.! Thanks for already trying to ruin my honeymoon even before it starts.