Ive never had a bad experience with MoreWine, infact just the opposite. On a large order I requested MBR 31 and was sent CH 35. Without even asking they overnighted the MBR and told me to keep the 35. Another time I ordered BRY 97 when I should have ordered BRL 97. BRY is a beer yeast. I called and explained what I did and they told me they should have caught it since everything else was for wine and they shipped me out the BRL at no cost. I can only imagine your issue was just an honest mistake on someones part.
Looks like I'll have some extra Opti-Malo and Fermaid-O on hand... Fedex says they have a package for me. It's not that this is a "bad" experience. The MoreWine folks make mistakes like everyone else. But, they're very responsive and do their best to make things right. With my first shipment this season, they missed an item (Opti-Red, I think). I called them, no hassle, another was in the mail the next day. With the next shipment, the guys at USPS decided to tour the state before getting it to me. Same thing, I emailed MoreWine, and they go out of their way to make it right. If they make a mistake and don't care/won't fix it (like the folks at a certain HBS that will go unnamed here, and with whom I will never again do business), that's bad... haven't had one of those with the MoreWine folks.