Why we returned our Oster 3200

We recently purchased an Oster 3200 food processor. Initially we loved it -- until we went to used the blade for shredding. They had failed to pack the blade extender in the box so the slicer/grater couldn't be used. I contacted Oster, gave them all the information on the model they needed to send me the part. I got an email back from them quickly. So far, so good. A couple of days later, an envelope arrived in the mail. I don't have a clue what the tiny black part they sent us goes to but it certainly wasn't the white 3" blade extender we needed to operate the slicer. We gathered up the food processor, found the receipt, and returned it to the store. We figured if they couldn't get a simple thing like a blade extender right, imagine what would happen if we had a real problem.