Incorrect surname printed on ticket

I booked a trip to Mauritius with Sherrine at the galleria branch. I sent through the requested names of the group that was travelling. Sherrine requested names as in ID documents as some of us didnt have passports so I sent it through 3 weeks ago. A few days ago I requested our airline tickets and she said she didn't receive our names. I had it resent. She issued the tickets and one of the passengers names was different to the name in her passport. Her ticket was issued in her married surname and her surname in her passport was ****en surname. Sherrine told me today she can't do anything to assist. We need to pay R15 000 for a new ticket and can't promise me if we'll even get 50% back on the first ticket that was issued. I cannot believe a surname change has to be the reason to issue a new ticket. I spoke to another employee at flight centre and he said we should just have to pay R500 to cover the cost to re-issue a ticket but does not want to get involved because Sherrine is our travel agent. Sherrine wants us to pay R15 000. We are travelling in 2 days. Pls contact me if anyone can assist me.