Here's a story. A friend of mine worked for a few companies, as an employee, which required extensive travel. He took out a HH card at the beginning and presented the card over on each and every stay. The period of time exceeded ten years and his number of visits well into into three figures. The friend led a busy life and he assumed all was good, rewards perhaps not as big a feature of his life priorities as they might be for some of us. Only recently he discovered that the card was never registered. It is practically impossible for him to reach out for the associated paperwork as it was always handed in to the various companies who employed him for his expense claims. Some of those companies no longer exist. Is there anything to be done?