Braam Jordaan, a deaf South African and a board member of the World Deaf Federation, said he believed the interpreter was using made up language.
'His hands, facial expressions and body movements did not follow what the speaker was saying,' said Mr Jordaan. He said he was simply making up his own signs.'I was upset and humiliated,' he told SBS news website.'He made up his own signs.Deaf South fricans have previously raised concerns about the young black male intrerpreter(pictured right) who has been used at a number of African Congress events.
Sheena Walters of the World Association of Sign Language Interpreters said: 'Its seems quite obvious that the interpreter isnt using South African sign language'.
Defenders of the man whose identity has not yet been disclosed have claimed that he was signing in SA's Zulu language.But deaf campaigners pointed out that SA has just one sign language which recognises all regional dialects.
Investigations are currently ongoing , according to a South African government spokesperson who said they are aware of the complaints about the man.