You need to take back those fish NOW unless you plan to get a new tank within the next DAY. Your stocking levels are ridiculous and cruel. How do these fish even have room to swim?
Call a local fish store in your area about getting store credit for your fish returns. They may even give you a good deal on a new, BIGGER tank if you return your fish to them. A lot of local stores also sell used tanks. To transport your fish, just put them in a tupperware container of tank water and bring them to the store.