no response,bad customer service south african air

I am really disappointed with the lack of customer service ,from SAA ,i bought a ticket for my little sister,i made a typo on her name in error ,there is one letter missing on her name,and i missed a birth date by one date.i sent an email that was responded to after i sent follow up emails,they advised me to call their call center,i charger my prepaid number only for all my airtime to run out while i was on hold for a consultant for close to run30minutes.i sent another email asking if there is an alternative solution,they still have not responded after 2 working days.my young sister is due to travel in afew days,i m worried now since SAA has not been responding.