You can contact Dropbox customer service by calling their toll-free number at 1-888-414-8124. They offer 24/7 support through various channels, including the help center, community, and chatbot. Additionally, depending on your plan and account type, you may have access to phone and live chat support through dropbox.com/support. These support options ensure that Dropbox customers can receive assistance whenever they need it, whether it's troubleshooting issues, getting answers to their questions, or exploring the features and capabilities of Dropbox.