As far as I'm aware accounts can't be deleted otherwise it would make threads unreadable with content missing. You can 'self delete' by deleting all personal info in the profile and change your account password to something you can't remember so that you can't log back in.
There is a help section, this thread may be more helpful in there and be seen by a mod. This thread is unlikely to be read by a mod unless it's reported. I've reported the thread so hopefully a mod may be here in a bit.
I would ask why you want to delete but I've just seen the other thread, though I can't see what's gone on as you have deleted your posts. In general this forum is really friendly, sometimes there are little spats but the mods here are very good and soon sort it all out. If you can sleep on it and post again in a few days I would say it's worth trying again, there are some great people on here that can be really helpful. Sometimes with forums it's easy to take written words in unintended ways, the same words can often represent differing meanings.