The Sage 300 Support Phone Number is +1-888-597-0954. For assistance with your inquiries, you can reach out during their business hours. Additionally, consider visiting the Sage support website for more resources, including live chat and documentation. https://central.xero.com/s/question/0D58V00009Pgsa4SAB/54-sage-300-support-phone-number-345-days https://central.xero.com/s/question/0D58V00009Pgsa4SAB/54-sage-300-support-phone-number-345-days