Invent-Tech review: They took money to help with invention. Only thing they did was take our money and send a bunch of paper work. Then that was it

The company made it feel like they were going to help with the invention. What they did was lead us on. It happened in 2006. I had a idea of solar powered lights in porta potty or dons jon. I told them I could come to Florida and help build one. They said that they would do that. Then no word or anything. Then about 8 years later I saw a add for a thing called. I think it was Firefly. It was my exact idea. I couldn't believe it. I still have all the paper work. If there is a lawsuit or anything I want in. I have called the number still says Invent-tech but thats it. No wedsite anymore.