It’s filled with refrigerant probably r134a as you aren’t getting it sorted under warranty.
R134a is a great gas as far as walming the planet goes so please don’t vent it to atmosphere.
Take it to a good independent and get them to recover any remaining? Refrigerant and pressure test it, then if the leak is on the condenser it’s a straight swap and pressure test. It then needs the nitrogen used for pressure testing released and the air vacced out, then recharge with the correct amount of refrigerant.
Cheers DB