We’re glad to hear you enjoy the pen’s comfort, performance, and lightweight design. We appreciate your note about the customizing space — to help us understand the issue better, could you please share a photo of your pen with the phone number added? This will allow our team to see exactly how the text is printing and explore ways to improve it. If your request is urgent and you need an immediate solution, please reach out to our Customer Support team via https://www.vistaprint.com/customer-care/help-center/