We're Here to Help
Existing customers, get the support you need. Our US-based team is available 24/7 to assist with technical issues, billing questions, and account management.
Support Hours
24 hours a day, 7 days a week
Support FAQ
Quick answers to common support questions
Call our support line at (213) 784-1397 for immediate assistance. Our team monitors network health 24/7 and will work to restore service as quickly as possible.
Log in to the My Bill portal at account.tierzero.mediedgemarketing-dev.com. You can view invoices, set up autopay, and manage payment methods.
Access the My Phone portal at core.tierzero.net/portal to manage call routing, voicemail, extensions, and other phone settings.
Our US-based support team is available 24 hours a day, 7 days a week. Call (213) 784-1397 or email [email protected] anytime.
Contact our sales team at (213) 784-1400 or [email protected] to discuss upgrade options. We'll assess your needs and recommend the best solution.
For user management on phone systems, log into the My Phone portal. For billing changes, contact [email protected] or call (213) 784-1397.