FIFA says 53,000 World Cup tickets were sold in the first eight hours of the final phase, and blamed "high demand" for the technical problems that caused delays.
FIFA said 23 of the 64 World Cup games are sold out after match tickets went on sale on Thursday at ticket centers and banks across South Africa.
Match, the company employed by FIFA to run the ticket process, apologized for the glitches which led police to be called to ticket centers in Johannesburg, Cape Town and Pretoria to calm frustrated fans.
Match chief executive Jaime Byrom said they "identified the challenges" and thanked fans for their patience.
About 500,000 seats were made available to local fans, the first time 2010 tickets could be bought for cash.