Backups are not provided for free hosting users. There was one made in December and in April due to server maintenance, but these are not intended to be used for any purpose other than to fix accounts that were broken in the transfer process.
That being said, an admin could say that they'll do it, but these backups are not permanent and new ones will not be made, unless otherwise announced.
If you need further assistance, maybe you can provide more information and we can troubleshoot it from there.