Return, no... (unfortunately) you don't have a legitimate gripe as far as being cheated by anyone, but it'd have been SOOOOO much better if you'd gotten a media code like TTG02, TDK001, ricohjpnr02, or TDK T02.
Were I you I'd be thinking about buying some REAL media at www.rima.com or other reputable seller's site, like the TY I mentioned previously, and set those CMC's aside for use as, "Buddy disks." (IE, "Oh, here you go buddy!" lol) I've burned ALOT of CMC cdr media, and I'd say about 10% or so has begun to flake and/or fail over the course of 5-8 years, which to me is not acceptable. They did burn ok and worked while they WORKED, but it IS in fact, some of the cheapest media available, not only then, but now as well.
Look around in the media reviews as well as in the bargain basement and see what people think of CMC Mag on a broader scale.
I'd still like to know what MID the disks you got earlier were.