Rodel has no answer for doubling a monthly payment/ *****ing

So my broker tried to sort this out with Rodel, but they just shrug their shoulders. I bought a new car October 2015. My monthly payment was R1044,75 from Jan till May 2016. Then it jumps to R1169,75 for only June. Then from Jul - October of 2016 it's R1064,75 again. For November - January 2017 it is R1431,40. Then it jumps from February 2017 - June to R2103,52. For July it is R2462,84 and then August 2017 till January 2018 it is R2303,14.

When confronted about this initially, they had two cars on the insurance and they agreed to refund me... but for only 2 months, which was Dec and Jan 2018. After this I decided to ask for all my bank statements and the above is what came to light. Now Rodel refuses to answer our questions. I can't understand why the amounts change so often and how from February 2017 my premium basicly doubled.

We will be taking this to the Onbudsman since they cannot give us any answers.