Wesbank bank draging its feet after I requested to surrender my vehicle

I financed my vehicle with wesbank under my company name in 2018,so due to economic reasons I'm unable to continue with the installments so last week I called wesbank to let them know about my situation of not being able to continue with the installments and requested to surrender the vehicle back to them,wesbank told me within 48 hours an agent will contact me to make the necessary arrangements with regards to surrendering the vehicle it is now almost a week an no one has contacted me,this is really fustrating, what are they waiting for "?more installments " for the vehicle to have an accident or to be ****** or do they want to black list me as I'm unable to continue with the instalment6...I told them they must not be surprised if I'm unable to pay next month or the following coming months.