Appalling service from NISSAN BRUMA!

I purchased a brand new Nissan Xtrail in 2018 with NISSAN BRUMA which was a big disappointment as their service was appalling. About a month ago I was through my documents and realised that they were items charged that where not on my car. 1. Tow bar 2. Mouse var 3. Step I called them on the 1st of November to make a query and raise my concern, they put me through to their Sales Manager who told me she can't access her system at the time and will get back to me on that same day. I did not hear from her so I called their Head Office and they promised to ask the Sale's Manager to get back to me. A lady from HO got back to me to tell me it was because I traded inn a car and there was a shortfall of R100000. 00 so hey had to make a plan for the bank to finance me. This was news to me and when I traded my car it was sold to them for R120 000 and there was going to be a shortfall of R60000. I told her that's not true and she told me she will tell the Manager to get back to me, it is the 17th and still nothing. I wasn't expecting much from her as she failed to assist me when I bought my car and they delivered it late, my number plates where dropped off at my works reception for me to install them until I complained again! She clearly dies not care and for them to make up items just to doop the bank into giving me a loan says a lot about their businesses ethics.