That is bad service, no doubt. When I was in the "biz" and other service organizations in my career I would always say 4-6 weeks. That is a reasonable time to cover most delays. Add two weeks or so for overseas shipping.
You should have your gear back by this time. I am so tired of receiving and hearing about terrible customer service. Sick of it. I would publicly be calling out the manufacturer on every forum I belonged to.
I get shat on every time I advocate "Made in USA" but this is why... most US audio companies you are dealing with the mfg. directly and shipping is days not weeks
I really hope you get this resolved quickly. And you should take your dealer up on the loaner , its the least he can do at this point. Good luck.