I checked your settings and it appears you have took about all the steps you can.
FYI: As stated, we cannot "delete" accounts that have posts as it would leave blank X's in threads where you posted or was quoted, messing up the continuity.
The site team can lock your account where 'you' can never access it again, if that's also what you want....but wouldn't normally take such a drastic step absent site guideline violations, in case you ever want to start posting again.
2011 Flagstaff 831 RLBSS
I've reported my DNA missing just in case it's found somewhere bad.