FIFA's World Cup ticketing partner apologised to South Africans on Friday after computer glitches marred the first day of direct ticket sales, government media reported.
"We want to extend our apologies to the general public, who tried to obtain tickets, and we want to thank them for their patience and understanding," said Jaime Byrom of MATCH, FIFA's ticketing partner.
"We have already been able to identify the challenges," South Africa's government news agency BuaNews quoted him as saying.
Thousands of South Africans queued Thursday for the half a million over-the-counter tickets available, but the day was marred by problems with the computerised ticketing system and fan frustration.
In Pretoria, police and security officials used pepper spray on fans who were reportedly pushing in the queue.