Carjet review: Never got my deposit back. Delivered the car on time, full tank and without any damage

I rented a car, last february and paid a deposit of €312,-. I delivered the car on time and without any damage at the airport in sofia on 20 th february. There were 2 guys who checked the car and said it was fine and they told me I would recieve my deposit back within maximum of 30 days. After that period I started asking when I recieve my deposit back. Since then they kept me on hold, telling me they have to check it out, not responding at all, asking for proof of payment and my creditcardcompany needs to confirm that they didn't pay the deposit back and after 20 emails they claim that I made a 'new damage' to the car, with a picture of date and time and that I should have signed for check out. I never signed for check out and my signature has been copy pasted by them, which is fraud. Online there are a lot of complaints about carjet.

I have all the e-mails between me and carjet. I also contacted the rentalcompany itelf in bulgaria and they knew, even without telling my name, where I was calling for.

I have the whole e-mailconversation and the whatsapp with the dude who picked the car up. I can't add it in here, but can send it through email?