I need help affording a lawyer

My phone company (I am keeping it anonymous to protect myself from further corporate action) charged me over 16.5k Euro for half an hour of roaming data that were spent without my knowledge on May 6th 2022.

That's more money than I can make in a year, more than my family can afford to help me with.

I have lost all my savings paying for the bill, and my checking account is also empty. I can't afford a lawyer that will represent me in a lawsuit against the phone company for these charges, and I don't have enough money for basic necessities due to the bill having been charged already.

The amount I have set covers the fees for a lawyer (3500€ for the amount that's being disputed) and enough money for a few months' worth of food (500€)