To cancel an order with 1800Contacts.com, a customer generally needs to act quickly, as orders are typically processed shortly after they are placed. The best course of action is to visit the official website to find the most current policies and procedures regarding order cancellations. Often, customers can find a "My Account" section where they can view their orders and possibly initiate a cancellation. If the order has already been processed or shipped, the cancellation may no longer be possible, but there could be options for returning the order after it arrives. For specific guidance on the cancellation process or to obtain detailed instructions, it is useful to check the website for contact information or relevant resources under customer service.