They should be ashamed, then garotted

This will blow your mind…..
I had an e-mail from the superstore that’s a few miles away from where we’re living, inviting me in for an interview.  I called them, and they seem completely oblivious of the fact that I’m already working for the company, at a different location.
I asked to see Ginger Graham (my boss) during my shift today, and I asked him if there was any forward motion on my request to be considered for a transfer. He disappeared for an hour, during which time he apparently spoke to HR at Head Office, and then told me “They want to accommodate you, but obviously they’re not going to get rid of someone just to create a position for you. There are currently no management openings anywhere in that part of Suffolk, but as soon as there are, you’ll automatically be put forward as a candidate”
So just to recap:
I have asked to transfer to a superstore closer to my new home.
A job as a petrol station manager has come up at the nearest store.
I have not been told about it.
I have applied for that job externally, putting on my CV that I have relevant experience, but not revealing that it’s with the same company.
I have been selected for an interview for that position.
I have checked again with my current manager, and been told that no management opportunities currently exist.
So what am I supposed to think? 
Maybe they rate me so highly that they don’t want to lose me so they’ve been lying to me to keep me where I am. Or maybe my boss is a conniving shit who just hasn’t bothered pursuing my request.  Or maybe there’s been a huge conspiracy against me involving my fellow workers, those above me at the store, the Human Resources department and all manner of dark, shadowy figures all the way up to the top of the business. Or maybe the whole company is riddled with ineptitude and there’s so much bureaucracy and bullshit that they don’t know their arses from the side of a binbag. Or maybe it’s a combination of them all.
I just don’t know.
So do I:
a) See Ginger Graham again tomorrow and tell him the whole story?
b) Call Head Office tomorrow and demand an explanation?
c) Get the Hell out with immediate effect and work somewhere completely different?
d) Take it all to the media?
e) Seek legal advice?

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RC 29-8-14