Insurance misconduct in the event of a pre-existing cover commitment

Hello, in January 2011 I changed my vehicle and registered it with my car insurance with a double card. I received a request from the VS which I filled out and sent back. When I recently wanted to register a second car with this VS, it turned out and this I have now written by the VS that a processing error of the VS of the processing process was interrupted and never a insurance certificate was created. The VS employee told me by telephone that my car had not been insured since January11 and fortunately it had not been harmed. Now my VS is demanding the contribution since Jan. 2010 with a driving performance of 12000 km. Is this right?