Seamless does not provide a specific customer service number for order-related issues. Instead, they typically encourage customers to visit their website for assistance. You can find various resources, including FAQs and support articles, that may address your questions or concerns regarding your order. If you require further assistance, the website often includes a form or chat option for getting help directly. This method allows you to describe your issues in detail and receive tailored support. Therefore, it is a good idea to check the current web page for the most up-to-date information regarding customer service options and any contact details that may be available.