Worst HR Rep Ever

Last October, I got contacted by the worst HR rep ever. First, he called and left a message- without referencing a job or a job number. When I called him back, I found out he was calling about a job application that I had filled out back in January- 10 months prior! He was quite annoyed that I didn't even recall his company nevermind what the position entailed. Most of the time when I get called by an HR rep months after applying to a position, they tell me that they've emailed the job description to me to refresh my memory and to return their call after I've looked it over. To appease him, I requested that he email me the job description and that I would call him back when I had looked over the details. I then call the guy back and he basically tells me that he is contacting me because they still haven't filled the position. He then implies that I am his last choice but HIS boss said that he wanted to interview me. Can we say unprofessional? He then tried to set up a phone interview with me the following evening at 7:30PM. He was surprised when I stated that the time was not convenient for me as I had a prior commitment (I had plans to attend a sporting event). He then told me that "you know, someone in your position can't pick and choose." I wasn't picking and choosing- he proposed a time that didn't work for me. For all he knew, I had scheduled another interview at that time or was working the late shift somewhere. So I simply reiterated that I had a prior commitment and asked for the next available interview opening. He told me that he'd have to get back to me. He then called me back at 7:45AM on a Saturday morning to schedule an interview. I was actually out walking the dog and returned the call when I returned. He then stated that if I wanted a job at his company, I would have to get used to getting up earlier (ummm....I can't tell you the number of times in grad school I started an experiment at 4AM in order to time it so that shared equipment would be available). I didn't reply to that statement...just let a long drawn out silence develop. He then responded "Well..." I replied that I was returning his call, why did he call me? He then responded that he called me to schedule an interview, but had changed his mind as he didn't think I'd be a good fit for his company. At this point, I was wondering what sort of reputable company can't fill a position in 10 months and works these sort of crazy hours. So I just replied I'm sorry he felt that way and wished him a enjoyable weekend. I then dismissed the entire incident from my mind until today. Yes, today, a Sunday, when I received a "LinkedIn" request from him. Yeah, because it's a good idea to network with someone who has implied that you are lazy and not worth employing. Oh, and I checked, the position I applied for- it is still open.