GoldCar Rental review: Deposit did not returned

Good day.
I have been rented car in Goldcar in Mallorca Airport booking number ES448910160 reservation number [protected]
GOLDCAR contract [protected] client number [protected]. According to the manager words they charged me fuel deposit  382, 86eur which must be returned after 2 weeks after rental if  tank is full and gave me to sign something without paper on electronic display without any circumstances just sign field . After rental Goldcar manager checked-in the car and gave me the paper that was no damages and full tank of fuel.
After rental I appeal  to Goldcar few times to return back  deposit but they ignore my  complaint.