Pxv Latur — demanding money

I got call from pxv compnay latur a lady talk with me about work from home of captdata 10000 captchdata will complete within 10 days with accuracy she send me a link via mail while i am going to installed that it shows error and warning so didn't installed it and i told her i am not interested before that i sign on email sign pad digitally, i am requested to that lady please cancelled my agreement she didn't gave any reply to me, after 10 days i hot call from aurangabad that person said i am advocate i got your data from pxv company i didn't complete your work within time so you have to pay compnu charges and utility charges. I told to them i am not login myself your software link not getting preoperly work so i send request to that lady for cancellation my agreement she didn't cancelled it. So the advocate is regularly call to me send email to me about legal notice and all. And demanding money if you pay the money then your case will close here immediately that t advocate said me. He is regularly distrub tto me. What can i do? Please resoved my problem i am worried about that matter.