Non settlement of trade in account

Took delivery of my new Clio on 7 March and left my Sandero there as the trade in vehicle. Signed all the paperwork and left with my new car. On 7 April to my surprise my debit order for the old vehicle went of from my bank account. Immediately called the finance house to be informed that my account has not been settled. Called Renault Fountains who could not explain to me why they had not settled my account with the finance house seeing that it was exactly a month later. After calling, mailing and faxing they promised the payment was at HQ and would be done in a day or 2. Now 10 days later and the account still has not been settled. I also paid an extra premium on the vehicle after it was traded in and still have not received that payment back either. Actually want to open a case of theft with the SAPS about the previous car!!!