Ebiz.com — I want refund

I joined ebiz 4yrs back because my friend told me about this company etc. I joined for their computer courses and to earn money. I even blindly paid the money of amount 14, 500rs or 15, 000rs something. But I left it cause after a month I realized that I can't do their networking thing and now their website is also not there. I have not even learned anything from their course or website. I want my full money back.