Works Media — payment not received for my data entry work

Address:

Bangalore, Karnataka

The company has given following ad
Special recruitment in works media
Free registration. No investment. Earn 27650/- rs in 15 days.
Work will be directly sent to your mail id which is given in quikr on[protected]
Works media vietnam has announced special recruitment for freelancing job seekers. The works depends on copy paste excel project. The maximum time to complete the given job (75 images) and submit within 12 days. The payment for the work you have done is 27650/-inr in 72hrs from time of submission.

I received the work and completed in the given time that is on[protected]
After the submission of work they asked me to pay service charges of rs.2800/- and i said i was unable to pay that charges and i asked why should i pay? And i requested them to give salary to my work from that they are not lifting the phone, can't give reply to mails or messages

Her name chaithra and hr name is j pradeep kumar