Corrupt Files, Grayed Out Tracks, & Intermittent Behavior

Question

So I took the plunge and payed my money. Sounded like such an excellent idea!  After 2 fun filled days (not) I am at a loss as to the value of this service.  I see the following behavior and after reading through these forums for hours I really can't say I've found the answers yet.  So here goes:
Every other time I start iTunes the files that are matched and available for download are grayed out.  So I do the routine "turn it off / turn back on".  Is this really the only answer?  Not really acceptable.
There are many albumns where most songs are matched but some are not.  I can't seem to find any way to recheck them.  They are all 128K or greater and play fine.  I've tried the convert them to AAC but no luck.  And there are far too many to do this manually for each song.  Major bummer.
Last but not least I have dozens of songs that say they matched, but when I try to download them I get an error saying the file is corrupted.  Clearly they referring to the file on the Match server, so... what heck am I supposed to do about it? Now I can't even delete those songs from the - they are stuck in my iTunes with a cloud download icon just ******* me off.
Near as I can tell there are 3 major features to Match.  Quality improvement, safe storage in the cloud, and replication across devices.  The product fails on quality (hit rate on matches is not even close advertised) and safe storage (files are corrupt so I am told make my own backups).   I can't speak to the 3rd feature personally because I am honestly afraid to turn on Match on any of my other devices based on the threads I read here and my experience so far.
So my last question to the community - exactly how do I turn this off and get my money back?  If these problems are not resovled within the next week or so I can't see any reason to continue the service.
Thanks in advance for any suggestions.
   Ed P.

Answer 1

One more update to summarize where I am:
Over the last week I have tried the following:
- 2 different computers on 2 different networks (home & work)
- same grayed out behavior on both, turning off match & back on corrects
- antivirus off & firewall off
- Computer 1 uploaded all songs, many did not match (even with the same album)
- Computer 1 deleted an unmatched song from an album where others matched,
  restored from my backup, and got it to match
- Computer 1 deleted local copies and downloaded from Match - 100s failed
- Computer 2 (empty library) download from Match, again 100s failed (different songs than computer 1)
- On both computers kept repeatedly trying to download failed songs over several days,
  got most to download
So my conclusion is:
1) There is a bug with iTunes where songs in the cloud are grayed out about
    half the time. This can be worked around by turning Match on and off again.
2) The upload and download process is prone to file corruption. That's why:
     - random songs within an album match and don't match, but
       deleting local & cloud copies, then attempting to rematch sometimes work
     - random songs fail to download from Match, but persistently trying
       to re-download them (sometimes dozens of times) can work
3) Neither problem is not related to user accounts, computers, or networks.
I am now engaged via email with a Senior Advisor from Apple support.  I have agreed to provide screen shots and more detail. I'm giving them a few days to either fix the problem or at least acknowledge they have a problem and are working on it.  If they do not he as offered to cancel my subscription.
I will post to this thread and let you all know the conclusion.