Extra booking fee for unaccompanied minors

I recently made a booking for two unaccompanied minors through SAA. SAA has a new system where a R100 service fee is applicable for all payments that go through their call centre, which is waived when the payment is made online. Unfortunately online payments are not possible with unaccompanied minor bookings, resulting in a extra cost of R200 which I was not made aware of when making the booking. Furthermore, it means giving credit card particulars to a stranger over the phone, inclusive of the CVV number. <br> <br> Why can't SAA just add the R100 service fee to the ticket cost when making the booking if the customer doesn't have a choice? Or at least inform the customer about it from the start?<br> <br> A phone call to their customer care didn't help much. I was told \Sorry madam