Invent Help is a Rip-off Pittsburgh, Pennsylvania

I had an invention idea which I contacted InventHelp about.  The manager of their New York office kept calling me for about a year telling me how good my idea was and that he was surprised I have been sitting on my idea for so long.  I finally relented and contracted them to develop my product.  After paying them almost $200 a month for two years I realised that I kept getting the same letter.  Everytime I enquired about my product and what they were doing, I got a generic letter informing me of the companies that they had sent my idea to.  The list and their efforts remained the same for two years.  I finally decided that I am not paying them $10,000 for doing nothing.  Now I am being hounded by them for payment.  They are even calling me at 9pm requesting payment.  I already informed them that I have no intention of paying them for a service they did not provide, however they still keep on calling.  Now they have put a derogatory mark on my credit report saying that I am past 90 days overdue.  It is not fair that rip-offs like InventHelp are allowed to mess up people's credit when they are the ones that are stealing people's hard earned money by faking a service they cannot provide.