ABSA Vehicle Finance has total disdain for their customers!!

We bought a car for cash from a gent who was emigrating to the UK on Friday, 11 October. He gave us all the papers, certified copies of his ID, settlement letters, letter allowing us to collect the NATIS papers etc. We went into ABSA a week later and after waiting for 30 min we were told we need to get approval from AVAF via the seller and the AVAF office. We got hold of the seller who was in the UK by then and he in turn got his father (still in SA) to go visit the ABSA branch in Lydenburg to get this approval. We got a voice mail from him saying we can go to Northgate to collect the NATIS paper this week. We made a 2nd trip to ABSA Northgate only to wait for 2 hrs this time while they tried to find out what was going on. Gugu (with serious attitude) then said OK she will hand them over but the sellers certified copy of his ID was older than 3 months so they needed a newer one. We again got hold of the seller in the UK and he email me a copy and Chestlyn van der Merwe a copy of his certified ID and Passport which he sent to them on 12 November. Time is now ticking as we had the car roadworthy which is costly, time consuming and they only give you 60 days in which to get it transferred into your name. The seller has emailed Chestlyn 3 times and I have emailed her twice since then with absolute zero response. Unhelpful Gugu says she can do nothing until she gets the go ahead from AVAF and AVAF say they cannot talk to me because I am a 3rd party. What now??? We are sitting with a car that we paid for which is not in our name and ABSA have the money in full from the seller and REFUSE to give us the NATIS documentation. Is this theft on their part i wonder?