I’m looking for a way to cancel or delete a closed ticket? is there any features available or exist?
There is no built in way to delete something completely within samba, once ‘submitted’ and in database there is no direct way to remove completely.
Perhaps if you explain your issue/what you want to achieve alternative solutions could be suggested.
Questions like this usually raise consern about people trying to mis report sales for tax reasons which obviously will not be supported by the samba community.
If you are solving a legitimate issue please explain the problem in more detail and likely an acceptable solution can be provided.