Video: Nelson Mandela memorial signer: I'm happy with my performance In an interview with John Robbie on South Africa's 702 Talk Radio, speaking in broken English and stuttering frequently Mr Jantjie repeatedly questioned why his abilities had not been challenged in previous high profile events at which he had worked. Asked if he was happy with his performance, he said: "Absolutely! What I have been doing, I think I have been a champion of sign language. I have interpreted in many big events, not only the event that's in question now. If you remember, I have interpreted in Ma Sisulu (the wife of ANC leader and Mandela colleague Walter Sisulu) 's funeral. I have interpreted in many conferences including the presidential conference and there was no one at all that said I have interpreted wrong. If I have interpreted wrong, why is it an issue now and why not an issue when I was doing the interpretation at Ma Sisulu's funeral and many other big events in South Africa?