[header] How to cancel an appointment [title] Contact the person your appointment is with as soon as you can. [step] The longer you wait to cancel your appointment, the more you are inconveniencing the person you are meeting with. Giving plenty of notice will show that you respect them and their time. 
[title] Call to cancel your appointment personally if you are giving short notice. [step] If you are giving less than a day's notice, you should call the person your appointment is with directly.