Searching for my father

Good day
My name is Anna-Marie Februarie and i currently live in Johannesburg .I need your assistance in finding my biological father whom I have never met .His name is Frank Williams and he stays somewhere in Transkei as he and my mother met there in the 80’s and it is where i was born .My mothers name is Anita Elain Februarie and she is from Kimberley . i was born in 1981 and he was an active dad until my mother left him when i was less then a year old . i dont have enough information about him and my mother is no longer around to shed some light onto this matter .i would appreciate your help as i am desperately in need of finding him