No response on Natis Documents

I have requested Natis documents from Standard Bank. The one is on my father in law's name. He passed away and I have sent all the documents and still they want to talk to him. We paid the duplicate fees after DSV lost the documents. I don't get any feedback. The other Natis documents that I requested is for a tractor that was paid off in 2024 they want me to pay duplicate fees because the Natis documents was send out in 2016 but it not possible because the tractor was still under finance. Still I did no response after I told them that. U send a email just for them to send a email back that they have send it to another department.