Told them my salary expectations and they laughed in my face. what do you even do after that?

So I was applying for a permanent position at the place I interned for (UNPAID) for three months, and they finally called to interview me for the said position. They didn't ask any proper questions and only told me to introduce myself before explaining they didn't have the position I wanted, so they offered me an alternative position. It wasn't what I wanted, but it was a clerical position, which wasn't that hard. Come to my salary expectations, they thought my demand was ridiculous and they aren't offering that; they offered something slightly below minimum wage, and they said I wasn't eligible for benefits till my probation period (2 MONTHS) was over. Basically, they slapped the job offer in front of me and said Take it or leave it. I had been unemployed for over 6 months by then. worst experience ever.