If you were some reputable member who needed to hide some information or his or her identity, the admin could have helped you change the account to anonymity.
But with the situation of your account—no posts, nothing—you should just consider abandoning it, as nothing more than that can be done for you.
The reason is actually best known to them even as the suggested reason by people rather than the OP are always faulty. However, the main issue we often get in this regard is that the OPs would just open the thread and abandon them without letting people know the acatul reason for the propose deletion if there could be better resolve than deleting the account. This one too has lasted 2 days without the OP returning back to it.