help me to Draft aletter to Euro Car Parks....Please.

Hi there I wondered if you cpould possible Help me to send Euro Car Parking Company a letter? They said they had given my car a ticket but I have not seen one! So I wrote to them explaing this and yet recieved another letter from them saying that this was noted but I was still respnsible for paying the over stay Fine! I wrote back and explained the situation again and asked to see Prove of this and the fact that I was Driving, as I am the Registared Owner...(I have not drove this car as I am in the Trade and Occassionally lend this Car out to customers while I fix their car). However I have now recieved another Letter from Controlaccount Credit Management on behalf of Euro Car Parks Ltd., saying the amount now due is £95.00 and the possibilitie to commence Litigation and to obtain Judgement against me if the Fine isnot Paid! Why is there No mention of the letter I sent to them? Would you please beable to help me Draft aletter to put astop to this Once and for All?