Absolute Disgrace!

I have settled a vehicle in February 2022 that formed part of an Estate which were financed through Wesbank. I am still awaiting the Natis from Wesbank to complete the change of ownership. Myself and the Executor are not receiving any joy from Wesbank regarding the Natis. We have been sent from pillar to post, even with the letter provided from the Executor authorising me to collect the Natis Wesbank still refuses to assist me. The license disk has expired over more than a year ago, who will be liable for those cost incurred due to Wesbank not providing any feedback? This is absolutely ridiculous!