He's in events management, like setting up places for big events / weddings / conferences / concerts. The company he works for are hired to do all the physical stuff like setting up marquees, moving furniture, sound equipment etc etc. Hence the working away weekends so Fri, Sat and Sunday during day and he is back early hours of Monday mornings. Then maybe some office hours close to home in the office during the week.
His friends, parents and boss contact him via my phone all the time. My phone acts a bit like a landline in our house. I'm aware this may sound a bit controlling, but I don't mind them calling me looking for him because at least I know he is where he says he is (ie they have never called me when he is working, only when he is at home, if his colleagues called me looking for him when he says he is "working" then I'd obviously find him out, so it's reassurance that he is not lying, iyswim?) 
I don't have a landline or work number (I'm mobile at work), but I always have my mobile with me and charged and even keep a spare charged battery if I'm not with the kids.
He doesn't want to listen to what you're telling him. He tries to avoid the conversation. He fobs you off. He lies to you, telling you he will get a phone just to shut you up. He has no intention of doing it. He makes you feel like you are complaining, you are nagging, you arewrong. He has no respect for you feelings, opinion, or needs. To expect you to contact him through others (only in an emergency mind) is, frankly, ridiculous. But the fact that he is so disrespectul and dismissive towards you is the real problem. That's what you need to be talking about
This is how it feels to me. He has very set ideas on how to live life (and a couple of strong clashing ideas on how to raise children, but mostly we agree on that issue) and although he is quite happy for me to pursue my own interests and life etc, he does not really ever listen to what I need from him - just shuts off. He feels that things like making me dinner, cuddles, being loyal etc ARE love, but whilst I do feel loved, I really don't feel listened to at the best of times, he is dismissive on a few things (the phone thing being one of them) and at times I don't feel respected either.
Until he is ready to have that conversation, I would ring him (via his boss) several times next time he is away. Make one of those calls late at night and another very early in the morning. Make it as inconvenient for him to carry on like this as it is for you. Then have that conversation
I don't feel as if i could do that, although I'd love to 
. I barely know his boss, have only met him a handful of times and I wouldn't feel able to ring his colleagues or boss on their mobiles late at night or early in the morning. H wouldn't like it, he wouldn't start an argument over it but he would probably ask what I'm doing phoning his boss at that time.
I don't really want to have another conversation, we have had the conversation / argument a few times now. Where basically I've clearly expressed why I feel it's inappropriate and disrespectful (the not having a phone) and he has said that he doesn't feel it is anywhere near disrespectful (then he gives examples of what he would consider to be disrespectful ie "I'm WORKING, not out at pubs all night ignoring my wife, THAT would be disrespect") and how I don't trust him, I can get hold of him in an emergency, the olden days excuse etc etc etc blah blah blah and it just reaches a stalemate. Goes round and round in circles until one of us considers leaving over a build up of seemingly minor things, and then a huge blow out ensues where changes are sometimes made, but then change only ever happens or things resolved when it becomes dire. Also, he makes conversations so difficult to actually have that I feel it's not worth the effort, although I know I'd leave and be on my own quite happily (and he knows too). I sometimes think he is just awkward (he is and always has been at emotional stuff), but other times I'm absolutely convinced he does it on purpose to avoid hearing me.
Our whole relationship since I was pregnant with the DC has been plagued with power struggles and locking of antlers. Even our families comment that we are both so stubborn. I have always been fiercely independent (apart from during PND) and stubborn and I always say to myself I will not be treated badly again (My only other relationship when I was a teenager was extremely abusive physically, financially, emotionally, verbally, sexually, every way). He is not so independent but is very very stubborn and 'I won't be told what to do by anyone', he is very defensive and seems to think me explaining what I need is somehow an attack on him, his parenting, his 'manliness' (another rolls eyes smiley)