Wesync Softwares on Instagram: "++ Biggest Comeback In Shark Tank Ever Jamie Siminoff's DoorBot, later rebranded as Ring, was rejected by the Sharks on Shark Tank in 2013. Despite the rejection, Siminoff continued to develop the product and, after rebranding to Ring, gained traction and eventually sold the company to Amazon for $1 billion. Siminoff later returned to Shark Tank as a guest judge and investor. This shows if you believe in something you should never lose your hope & don't give up. C