Extreme supplements Worldwide nutrition.net Extreme FDS Charged extra to my card. Refused refund Bronxville New York

I purchased supplements off this website and it was advertised as free shipping over $50, I spent $88.90 and received an invoice stating this and showing free shipping. When it was taken from my account there was an extra $30 taken. I contacted them and they said it was shipping and refused to refund it. I took a severe reaction to the supplements and ended up in hospital, as the had a money back guarantee I contacted them again and they agreed if I returned them they would give me a refund. They now refuse a refund and say they merchant account which took my money is closed but the website is still operational?? It is a lot of money to get ripped off.