Data Entry

I have a call from spinaxo data solutions company gave me 1000 forms to complete in 12 days they have taken my aadhar card photo and I have digitally sign on the agreement which is not my sign now they are blakmailing me to pay 4000 and refused so they send me a legal notice a lawyer name payal rajaput from madhya pradesh forcing me to pay many calls and msgs and mails they have blackmailing me what should do?