Incorrect amount due for a replaced car

I bought a new car on 25 October and wanted to replace the old one. After a few system errors, a consultant called me to help finalize that. At the end of the call, I realized that the next debit order amount was a bit too high (way above the monthly premium), but I was assured not to worry as that will be fixed as it is something that requires supervisor intervention.

I received policy documents, and everything looked fine on paper, but on the web it still showed that high amount. I called the contact center today to verify if the error has been fixed, and it wasn't. I was put on hold for over 20 minutes without anyone coming back to let me know what is happening in the background.

The policy owner (my wife) is out of the country, and I am trying to get this sorted before the debit order date. Can someone please have a look at this urgently before the debit order date?