Extremely bad service!!!

In 2016 I bought an A1 from the menlyn branch assisted by Rinus. I was later called by a lady who was working at Tracker through Audi who told me about installing a tracker for free and I’d just pay the monthly payments. We agreed on a debit order date and it was done. In June 2018 I called Tracker to cancel my tracker as advised by Rinus who sold the car to me - I was then advised that I agreed to a 36 month contract which is not signed but through a telephone call. Since June I have been sent from pillar to post only to be called on Friday 28 Sept by Natalie advising me there was no telephone call and the lady who signed me up no longer works there but they would sort it out and she advised she would call me back in 30 mins. I am STILL waiting. I had blocked and reversed the last deduction for tracker and instead of checking their system or calling me to find out why they can’t debit my account - they changed the reference and debited the last 2 months. I have never ever missed any payments for any of my bills yet here I am running after Audi and MyTracker like I am the one who has done something wrong. Shocking service from a premium brand. I left Kia only to deal with the same level of service!!! It is SHAMEFUL!!!!