The freezer compartment line is likely responsible for circulating refrigerant, which is crucial for the cooling process. If gas has escaped due to the hole you poked, it can disrupt the cooling system and may lead to the refrigerator not working properly or not working at all.
In such a situation, it is essential to seek professional assistance from a qualified refrigerator repair technician. They can assess the damage, repair the hole, and recharge the refrigerant if necessary. Attempting to fix it yourself may cause further damage or pose safety risks.
Remember that refrigerant gases can be harmful to the environment, so it's important to address this issue promptly and responsibly. Turn off the refrigerator and avoid using it until it has been properly repaired.