Absa vehicle finance department

I'm Herschelle Afrikaner my late father Herbetlrt Afriknaner died in 2008. He bought vehicle from absa vehicle finance in 2004. After my father's death my mother paid up his vehicle in 2009. Up until now 15 years later we struggled to receive original papers from absa. I can't use my father's vehicle which he left in his estate. I tried to call absa vehicle finance, but very bad service. I don't know anymore what to do.