Globaltechworksolution — i'm not getting my, salary of 17 500 rs and penalty of 3999+3999 rs.

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globaltechworksolution.com

I got call from one lady regarding f9rm filling later she had taken my details name contact details and aadhaar number, aftr sometime they sent an agreement mentioning about salary and penalty charges, once i have done one mistake while doing the job at that time one person called me and said you have made a mistake so you have to pay the penalty otherwise we will take action legally then i got fear and and i paid 3999+3999 he said it is refundable with your salary and later i informed her about that i have completed my work when i expect my salary she said salary department will give you a call, but yet i didn't get any proper response from them i'm trying to call them but they are not answering my call and they have blocked my number in whatsapp also. If i try to contact them with another number they are not responding properly, please help me, because we are from. A middle class family, we do these kinds of jobs in order to save some money for future., but these people take this chance and grab all our money. Please do the needful to get my salary as soon as possible..
I have attached agreement copy also