What is your reputation in your local business community? Are you considered to be a person of your word? To be trustworthy? Do you have a reputation for doing what you say you are going to do? Or is your reputation less than honorable?
Nothing irritates me more than to be told one thing by a customer or a vendor and later learn that it was not true. Everyone makes mistakes, and I will give grace to any long-term business associate. But nobody wants to work with someone who lies. It is simply unacceptable.
People like to do business with people they like. And people of integrity like to do business with other people of integrity. So in business and in life, always strive to do the right thing.