Absa are lying

I have been trying to sort out the balance owing on my car for the past 2 years. Yesterday, after threatening them that I am going to take them to the NCR, they finally conceded to assist me. I questioned my why payments were reduced, they said that I asked for the reduction which I didn't. Now they say that my payments for the remainding 8 month are R7200 per month up from R1000 per month. This will be all fair and well because the R7200 per month multip**** by the remaining months equals the balance outstanding except for one little oversight on their part. I am in advance by over R20 000 so the payment can't be R7200 and of course the R7200 includes interest whereas the outstanding balance is capital only. The National Credit Act is an act of parliament and the National Credit Regulator is a mechanism of this act. Absa have not been forthcoming in over 2 years of battling with them, their blatant lie of yesterday indicates just who they are. ..Instead of assisting they try to cover up their mistake at my expense telling me that I asked for the reduction. If I continue paying more than double the reduced payment why would I ask for the reduction Absa? And then why lie that the remaining term is now 3 x what I have been paying and try to pull the wool over my eyes and just blatantly lie? I am giving you until Friday to sort this matter out otherwise I am taking you back to the NCR where I won against your organisation before.