Fini Technology — harassing

Respected sir! Few days ago i got call from fini technology company regarding part time job data entry. They said me to register by paying 300/- after that they had forwarded me the workload and gave the time limit of 15days and they even took my id proof with photo and signature and also a video as i have completed my work within 15days now they are saying that i did not reached to the 90%accuracy without even checking my papers and daily they calling me for penality as im a student i cant effort to pay and even daily they are sending me mails and messages. And tourchering me.. I kindely request you to please help me regarding cancellation of my agreement. Such a fake company