The phone support number for MetaMask is +1-855-518-2591 for both the UK and the USA. You can use this number to connect with a MetaMask support representative. Does MetaMask have 24/7 customer service? Yes, MetaMask provides customer support services to its users around the clock, 24 hours a day, 7 days a week. This ensures that users can reach out for help whenever they encounter any issues or have inquiries regarding their accounts or transactions.