After the explaining the situation to Jocelyn, the customer service attendant, she apologized countless times and gave me a refund. At my request she called for someone in the meat department, who also apologized upon inspecting the package.
A special thanks to Eric in CM's meat department. Not only was my money refunded, but at my request he opened another package of ground beef that I randomly picked as we discussed the situation. Then insisted on giving me not one, but two free pacakges of ground beef (shown here on my stove). Keep in mind that this was after my money was refunded. Now that's service!
There are always lots of complaint-related blog posts out there regarding poor service or bad food experiences, so I thought I would share one that has a good ending. Kudos to Central Market and two special employees for their great handling of an unfortunate situation.