<human>: so hear me out,
I was working for a car rental company. I just bought a new house and needed to move some furniture so I asked for one of the big vans (a Merc Sprinter) so I could move everything I needed in one go.

so far so good. I get the car and they say I just need to pay for the fuel I use. 
so I get in the car and imidiately notice the gastank is only half full. I instantly go back to tell them and they say its a malfunction. The tank is full.
alright, I go about my buisness and use about 10% of what is in the gastank. I deliver it back. no problems so far.

now from this point on, the boss's son was starting to hire his own friends and giving me less and less hours. 
also, suddenly the van I took had damage (that was already present when I took it) and they were expecting me to pay. 
also, the tank was almost empty according to them so I needed to pay around 80 euro's in gasmoney to them.

So I thought, well fuck this. you're not giving me any hours (were I used to work about 30 hours a week) and suddenly charge me more? NOPE

2 weeks later I get an order of payment of 300 euro, excluding the 'damages'.

I never paid this and they occasionally send me an invoice to pay them but I do not give in to this. I never signed a contract proving I took the car so they dont have anything to make me pay them.

Can you give me a shortened version of the text?
<bot>: borrowed company car with permission, got screwed for gasmoney, damages present before I took it, and rent. dont pay their invoice for it because I didnt sign contract.