Losing access to your webpage can be frustrating, but there may be steps you can take to recover it, especially if it was designed using Joomla templates. First, try reaching out to your web designer through any available contact information you have. If that fails, you can explore accessing your Joomla account or contacting Joomla support for assistance. Additionally, if you have any backups of your website or access to previous versions, you may be able to restore your webpage from there. It's also a better idea to consider working with a new web designer or developer who can help you navigate this situation and potentially recreate or restore your webpage.