<human>: Can you give me the gist of the text in a nutshell?

A couple of months ago I was offered a new job to start this month. It's a bit like a professor at a college, but no teaching. This future colleague is in a similar field but not exactly the same, so although our work overlaps, it's really not that similar. NB I will have a supervisor that is not him.

Since I was offered the position he has been in constant contact. He emails me 2-3 times per day on average. He has called me on my cell at 9pm at night. He calls my office phone. The calls last up to an hour and I keep trying to interrupt to say I need to go but it doesn't work. It's not only annoying but it's a complete waste of my time

He is very demanding. He is trying to make me do things related to the new job, but I am still employed at my current company. e.g. he sends literature for me to read and then follows up on it, or wants me to write reports, and he constantly follows up on it putting pressure on me to do what he wants. He is completely overbearing and I am starting to regret accepting this position. I am dreading what my life is going to be like when his office is down the hall.

The irrelevant emails range from buying property to baseball to weather. Lots of unsolicited advice that I do not want nor care about. Initially I responded to be polite but I am past that point. I am at the point of withdrawing from the position, however I have already signed the contract.

So far, I have stopped answering the phone (I no longer answer my cell, I need my minutes - he ran them out in June). I do not reply to emails outside of working hours now. I do not reply to irrelevant emails (but he still sends them).

I am making him sound like an awful person. He isn't. He is kind, friendly, and helpful, but I feel totally smothered and controlled. I suppose he thinks he's being helpful but it's not helpful. I am NOT going to do what he says regardless, but I know once I start there he will be in my office 10 times a day wasting my time. What do?
<bot>: Future colleague driving me insane with constant contact. Telling me what to do, demanding etc. Feel totally smothered and regretting taking the job.