How do I file complaint against a consultancy firm who charged money for filing H1b, but not refunding the amount?

Hi,

Need an expert help.

I filed H1b for my spouse last year and I paid 6500$ as H1B fee. The application was not picked in 2018 lottery. Now the consultancy guy has been delaying the refund amount. He is neither sending the document nor telling me how much amount he would refund. He is not responding properly.

I have become highly suspicious that if he ever filed H1B for my spouse. Please suggest me ways to retrieve the amount back. How do I file a complaint against them? I know that I should not have paid the fee at first as the H1b fee should be borne by the employer. I am also guilty to some extent. If I file a complaint with DOL or USCIS against that consultancy, will I get my money back and will there be any action against me as well for paying the visa fee? Is it clearly an exploitation by that employer?

Please suggest me how should I proceed with the legal process. Thanks!

The same has happened with me too. They simply took money and never filed for the visa.