Europcar and Tempest keep deposit back and give no proof!

A few weeks ago I wrote a review on this a.w.f.u.l company. Tempest are pilferers and steels money. I have been guaranteed by Europcar that they are looking into the matter. But a couple of days ago I suddenly get an email stating the car I hired in December was in an accident and I must fill in a form. I was NOT in an accident and for some reason no proof can be supp****. When I dropped the car at Tempest at Cape Town International Airport I walked around the car with a woman who did checks together with me. She found nothing wrong. So I handed over the keys. I have 3 other people who were with me as witnesses. Later that same day I got a form stating the car is damaged. And that I need to fill in forms etc. The car was NOT damaged when I returned it. And when I request for photos as proof it gets ignored. On Friday I get an email that the car was in an accident! I returned the car on 23 December 2023! I want my deposit back. There is no proof that the car is damaged. I will never ever hire from Tempest or any Europcar company. I would rather walk.