How do I contact the Mannatech corporate office?

Support for the Mannatech + desktop and application. If your questions or concerns are pertaining to the following, Mannatech customer support will be able to assist you since they are the ones who handle the inquiries listed below. You can contact Mannatech Customer Support by calling 800-281-4469. - Account information- Billing and/or altering billing- Cancellations- Access or changing of username or password- Access to corporate back office- Enrolling a customer- Product information