Shine.com — Complaint about Fraud Job Mails and lost money

I am Mahendra H D, (mail address: [protected]@gmail.com) got mail from Job Mantra through shine.com for part time job. In mail they gave ashish Upadhyay (Mobile number: [protected]). I paid registration fee as 1200 Rs agaist DES company, today I completed my work and submitted data entry but now they are telling to pay 3500rs as GST instead of giving salary of 15000 rs. Please atleast get back 1200rs.
Who will pay GST for this jobs. They didn't inform before.
Why do you support this types of fraud Jobs in website, then how could we believe for full time jobs and leave working company.
Please contact them, atleast let me get my registration fee back.
I am doing part time job to fulfill my daily requirement/needs. For them 1200rs is small amount but for me.. it's big. Me and my family dependent on it.
Please begging you to support and help me to get back registration fee please.Please find attached of mail I got and whatsapp chat screenshot chatted with Ashish.
Mail is sent to my friend Monika.H.L ([protected]@gmail.com). I contacted Ashish for job. They are fraud please get back registration fee