O Tech — this company is fraud

I was searching for part time job and they call me to do work with them. The work was to fill capthas for 10 days and you will be give a salary of 20000 after 10 dys then they ask me for my aadhar card n they send me an agreement n said to sign on it i ask that girl that how can i believe you bt she convinced me.in that agreement they have written that you have to give 5000 as penalty bt that girl said that u don't have to give any money they only says like that. And now i don't want to work with them bt they are asking for money what to do please help me.