This issue should have been addressed while you were at the hotel. I would have asked for a reduction in room rate upon check-out or some points if the bill was going to be paid by my company. Trying to address the problem after check-out is, in my opinion, a bad idea. Now that it is after check-out, however, you could call or email the manager of the hotel and request some form of compensation. I have found that managers may ignore your call or will tell you that you should have complained when you were at the hotel. Good luck.