Interview madness...

First call on tuesday. Asked to call back on wednesday. Called on wednesday. Asked to call back on thursday. Called on thursday. Asked to come for interview on friday. Had a feeling in my bones that I should call and be certain. OOOps! did they forget to tell me? It's now on monday instead. That is, today. Let me just say, I am getting there at my own time because for some reason, I feel I will show up there and nobody will know who the hell I am...