I doubt if it's a particularly bad batch. More likely, it's just that DHI has some new smells for you and you're still learning about them and trying to decide if there's any possible way you'll ever like them. We learn about fragrances just like we do anything else, and our opinions can certainly change.
I'd say give it a little time. I think it's fairly common for most people who are new to DHI not to know what to think about it, initially. The iris tends to stick out and annoy people, but then for whatever reason, it starts to grow on people. You'll notice the cocoa later on in the dry down and it's very nice.
If it doesn't grow on you, it will most likely have to be a learning experience for you to never buy before sampling. You can alway sell it on eBay, or here (after a year or 500 posts....whichever comes first).