Hello, sadly the only way to recover a lost account is through CS via a ticket or appeal, which you have stated you have already done. Due to the holiday, they are experiencing a backlog on tickets and trying to work through them as quickly as they can. I am sorry for the inconvenience caused by this. One thing I would suggest doing is by trying to provide them with as much information as you can think to do, as well as trying to provide them with any recharge receipts to try to expedite this process. When you do recover your account, I highly suggest filling out as much of the security information as you possibly can to try to help recover your account if this happens in the future.