Teleperformance — Complaining about fraud with job seekers

I want help. Actually I have a complaint against Teleperformance company. This company is hiring candidates nowadays for Customer Care Support. But after all the formalities even they took our personal details from us like bank account details, aadhar card details, pan card details etc. and after taking all the personal details they said that I we can't hire you because there is no requirement. Me and some candidates have pit so much effort into this job like we bought a new laptop, we took the connection of wifi after all that at the last moment they said that we don't need you. Even we have offer letter too. They gave offer letter to us. Please register my complaint because we all candidates are coming from a middle class family and it's not easy for us to buy a new laptop and wifi connection suddenly.