Incorrect, unsubstantiated billing, legal threat

A week ago I received an email from Tempest legal department that I have an invoice due that is almost a year old and that I didn't receive the invoice because they didn't have my contact details. This is despite the fact that I've been renting cars with them up until a month ago.<br> <br> I requested statements from tempest, to ascertain how I could be owing them when , Firstly I pay upfront for the rental, secondly they take a deposit and only refund once all expenses have been deducted after the rental vehicle is returned.<br> <br> I have shown them the actual card transaction that was for the 2 day rental amount and deposit. What I have asked for from Tempest is that they show me why they say I owe even though they have proof of the financial payment transaction.<br> <br> Now they are threatening me with legal action, and I feel I have done nothing wrong<br> This is very disappointing from Tempest, especially since I have been renting vehicles with them at on a long term basis.<br> I need somebody to please look into this