Refusing to send NATIS documents

I paid up my car in 2016. I still haven't received my Natis documents. I have been sending emails and i get a respond stating the name that i don't know, as per below. This is the last complain i am sending. I will escalate this to my legal advisor.

Good day Miss Osenyeng

We acknowledge receipt of your email.

Please note that we cannot assist third parties with any information on our clients’ accounts. We may only assist if we receive a signed letter of authority or email from the primary account holder for you to act on their behalf on their account.

This request can be emailed to ********** or fax ***, or alternatively the primary account holder may contact us directly on ***for further assistance.

All queries are to be directed to ********** or faxed to ***.

We trust the above is in order.

Kind regards

Multi Media Contact Centre MFC, a division of Nedbank Sunninghill Campus 24 Achter road Sunninghill Johannesburg Gauteng 2128 Tel : ***Fax : ***E-Mail : ********** Website : www.mfc.co.za Border Letters Enquiries Fax : ***E-Mail : **********