We have some of these and they ain't hot. At the plant store they had sweet and hot. Do you have to wait to a they turn a diifernet color for them to be hot?
I've never grown hot banana peppers, but none of my other peppers which are hot require complete ripening to be hot tasting. Different degrees of heat, yes, but it sounds to me like yours are not the hot variety.
The upside is, they will still be great in food! And if you make salsa, for example, you can mix them with hot peppers. The more peppers the merrier! Also nice with taco meat! (I'm having tacos for dinner, and used more than one kind of pepper when I cooked the meat.)
I agree with them. I grow hot wax and hot bananas every year and they are good to go straight from the plant. We like the sweet ones dill pickled whole or cut in rings a fried.