Are you working with the current version of Photoshop Elements (that is, 13/13.1)?
If your program is Photoshop Elements, then you have posted in the wrong forum. Somehow your thread got posted in the Adobe Premiere Elements Forum (video editing).
Please re-post your thread in the Adobe Photoshop Elements Forum or wait for a moderator to see your thread here and move it from here to there.
As an aside, activation and serial number issues are the domain of Adobe, and apparently Adobe has not resolved your issue. How was your contact with Adobe left...are you supposed to contact Adobe with results or is it supposed to contact you with follow up. I would think that Adobe is the only one to resolve this issue, but you can get opinions at the Adobe Photoshop Elements Forum.