Mark Levinson is owned by Harmon Kardon which is owned by Samsung. Harmon Kardon is a respected name in consumer and professional audio. Levinson has certainly had issues with customer service in the past but to compare them and Harmon Kardon to washing machines and cell phones is not exactly fair.
PS Audio is a separate, privately owned company founded by Paul McGown. McGowen left the company for a while in the '90s but went back and, as far as I know, is still there. I have no idea what your service problem was, but they are a respected audio company.