Worst financial services company we ever dealt with!

We bought a vehicle in 2008 and never requested the Natis documents. We are selling the vehicle now and need the documentation. I contacted MFC and was told that the documents would arrive within 10 working days. The next day they confirmed the address. Next thing we get a SMS requesting payment of R506.64 ON 29 January to issue a duplicate, for something I never received. Phoning back, MFC said they destroyed it, because it was never requested. My question to them: "Why should we pay if they destroyed it?" Deafening silence..... We contacted them again, because buyers walk away if there is no Natis document. This time MFC says that they have sent it to me. I request proof, but they do not deliver! On 6 February we lodge an official complaint to Nedbank and still nothing. Absolutely PATHETIC service!! PS: We also requested Natis documents from Standardbank on the same day as MFC, which were delivered the next morning.