Vehicle papers missing

I purchased a vehicle around 2017 and paid the vehicle off in 2018. Recently I wanted to sell the vehicle but could not find the registration papers. I contacted Wesbank and was informed that the papers were sent in 2018 to an address in Cape Town but the address Wesbank had on file was my correct address in Port Elizabeth. I have contacted the customer call Centre 3 times and still no response as to why the papers were sent to some foreign address and not the address on file. I have also not received any feedback as to a remedy but was told they will get back to me vis email. How am I supposed to sell the vehicle and why has it taken 2 months and still no feedback. Absolutely shocking service.