pay or not? strange bus money

On 05.12.2007 I was served with the following cost notice: Dear Mr. XXX, the prosecution of the traffic law violation with the warning number XXX was terminated in accordance with §46 para. 1 of the Code of Administrative Offences in conjunction with §170 of the Code of Criminal Procedure and §2 para.3 of the Ordinance on Responsibilities in the Code of Administrative Offences. According to §25 StVG, the costs of the procedure are imposed on you as the holder/entrepreneur of the holder, because the finding of the driver of the vehicle, de r had committed a breach, not before the statute of limitations was possible, or would have required an inappropriate effort. At that time I was supposed to pay 15 € fee and 3.50 expenses, I had allegedly committed the violation of traffic regulations on 25.08.2007. What I had committed was not communicated to me. On my request to the specified mail address no answer was received until today. On 26.06.08 I received a warning that I had not yet paid the bus fee. now with the reminder fee 20,58 €. Do I have to pay this, although I am not aware of any traffic loss or I have not been informed of the alleged traffic loss to date?