Frustracted

Hi. I joined Innovation Group in January 2017 and since then all my payments were up to date until i had to changed my banking details due to personal reasons. On 15 November 2017 I called Innovation Group to inform them about the change of my banking details, I was asked to send all documents via email and I did. On 24 November 2017 I called to confirm if my banking details were updated, and it was confirmed that they were updated. I was shocked on 27 December 2017 when i was told that i can not take in my vehicle for service because my account is on "HOLD" because i missed November payment. I tried by all means to prevent this when i called on 24 November 2017 to confirm if all documents were received. So on December 2017 I called Innovation group and i spoke to the gentleman by the name of Nkosinathi who told me that my banking details were not captured correctly, the person who was capturing just decided to change my account from Cheque account into savings account. Nkosinathi told me that he informed the complaints department and they will contact me in 3 days but up until now i have not been contacted. My vehicle was supposed to go in for 45 km service and it did not go because of someone's error in the company, now i have to suffer! My vehicle is now sitting at 48000 and nothing is happening. I do not know what else to do, my friend advised me to go to Ombudsmen but i thought i should start here.