Infineon Technologies — form filling job

As i was in need of money for payment of college fee i searched for home based jobs and recieved call from infineon technologies from surat and provided the work of 800 forms in 7 days. I have to hire a computer and internet connection for which i had a loss of rs 2, 000 and passed on this information to my brother after submitting work successfully.in the agreement it is mentioned there will provide qc report in 4-5 days but i didn't recieve it even after 25 days i have been constantly calling them and message in whatsapp innumerable times with no response and all there numbers are invalid or else don't lift the call. After few days i received call from they advocate to pay rs10, 000 or else they will take legal action i requested him that i completed my work but he is threatening me of legal action and using inappropriate words. Im a student inspite of submitting work there are constantly harassing me for payment of rs 50, 000 and threatening me for further legal action. Inspite of innumerable attempts i didn't recieve money in return they are asking money. It is such a fake and fraudulent company infineon and oceantech technologies, surat.