Business ProfileforProfessor Commerce

I was working with Professor Commerce to help my Amazon Seller business grow. Tyler W******** was the man I was working with. He had me "credit card stack" rather than a loan to purchase product for Amazon. Professor Commerce's services include choosing the product, holding in their possession until sending to Amazon for listing, my only obligation was to set price (which I never have, they did). Tyler W******** expired in early February . I began working with him in November 2020. I paid him for their service (approx $8K), plus product on my new credit cards from 777 Figures Funding, also a fraud because they told me to say it was a personal card rather than business. His brother, Brad W******** picked up the ball and "promised" to pick up where Tyler had left it. He has done minimal work, refuses to refund the money I invested with TYLER W********, and to make matters worse, has done nothing to make my Amazon seller account generate revenue. Out of all the products "purchased" I have only sold a 6" knife key chain, out of 300 ordered, I've sold approx 30. I have tried to dispute the credit cards, but I didn't do it within their 60 day policy. Problem is.....I've been working with Brad patiently since January!!. He has not responded to emails, calls, texts, etc. The amount that is burying me is approx $40k. I have strings of emails with Brad urging his help, he just took my money and ran with it. Any listings he did for me in Amazon are either "out of stock," or with restrictions that have not been cleared with. I have all paperwork needed to prove it. Professor Commerce is in some sort of relationship with Amazon because that is how I met these two men. They go out and do workshops to recruit new sellers into Amazon. I have had two bad experiences since 2018 in Amazon and was giving Professor Commerce one last try. Now I'm in so much debt with nothing to show for it. Am planning on filing a complaint next week. Can you help me?