A family of Microsoft word processing software products for creating web, email, and print documents.
The method of encryption used on password protected files is designed so that it is NOT possible to access the file without the password. Microsoft technical support do not have any means of getting around the password, so there is no point in contacting them about the issue.
While by Googling you may find some hits from "organizations' who claim to be able to remove passwords from files, most of them will require payment by credit card and giving your credit card details to someone who cracks passwords for a living is not prudent.