twitter for iphone username issue?

[johndoesdrums]

ive already googled and saw other people have had similar bugs

i changed my twitter name and twitter for iphone just doesnt like the switch now.
it still treats the account as if it was its old name in most cases (posting pictures etc) it simply doesnt acknowledge the new name.
i cant delete the old username is settings as well.. i deleted and reinstalled and it still wont give an option to delete my old name.

only reason why i even care now is because with OS 6 ... my new twitter name is the old OS 5 twitter... its So weird

when i open my old usernames profile its the new OS 6 style, look and feel.

this seems like a mega big time glitch ... ive seen similar problems go unaswered on forums via my google search

can anyone help