To be brutally honest but I hope polite, you do come across as a bit high maintenance just from your actions. They get you a longer term tenant than you say you asked for and you're not happy with that, and you also got upset about the tenants not moving in until 2 weeks after settlement (which is well within what I'd expect). Both these things, if I were your PM, would be setting off alarm bells, and I'd be avoiding returning your calls.
(Not that this excuses them if that's what they are doing.)
They knew - as we knew - that the chance of the tenants accepting that "offer" were a snowball's chance in that really hot place. The chance of it is so remote that it doesn't seem worth communicating about; a bit like ringing you every day to tell you the house hasn't burned down.
I suspect they're really hoping you'll terminate them. Not returning your calls may be a deliberate strategy.