Rex Enterprises — they threatening me and forced to pay the amount

Dear sir my name is ramya i am a student. I applied for part time job at quickr, one day a lady message me to give me a chance to get work she told me a form filling job 1200 forms filled in 8 days but i will can't continue my job because of my family situation so i message that person if i could not complete my work but she didn't answer me after two days she replies me i don't know please contact helpline then a person call me he is an advocate the company filled a case against me they threatening me to pay 7300 i will pay the amount now they told me pay 12550 otherwise they will be complaint against me in criminal section i am the student how can i solve this problem please help me sir