I'd better phrase this all a bit carefully so it's not too outing... 
A company has offered me a job. It's a very good job and I really, really, really want it. I'm quite excited about the work I could do there.
The offer was a not quite right. So I called the company back and had a conversation with the boss where I explained that I can't quite accept it as is, but with a few tweaks to the offer, I'm all theirs. The conversation went as well as such a conversation can go. Boss said, 'Leave it with me, we'll work something out.'
4 days later boss's PA asked me to send through a bit of extra info, which I did.
Then silence.
One week after that I emailed boss to check how things are. Boss said they're working through some HR issues and will get back to me within 2 weeks.
That was 2.5 weeks ago.
So do I email them again? I tried to call, but boss is not in the office. I have a mobile number, but seems a bit intrusive...
What would you do, oh wise ones?