I feel your pain.
I had a similar experience a number of years back. I ordered a Benz Ruby 2 through a well-known (and, at that time, well-respected) dealer. He demanded full payment plus my current cartridge up front to order it. Once paid, I couldn't get this guy to answer my emails and he just plain ignored requests for a new telephone number for him (the one we'd used had been disconnected suddenly).
He had promised delivery within four weeks. Four months later, I was still trying to get my cartridge out of him.
Finally, when I tracked him down through his IP address and did a little detective work I finally got a phone number for him. We had an hour long discussion on the telephone where I made it clear that my next move was legal charges including but not limited to Mail Fraud. He promised I'd have it within the week.
Actually, it took him two weeks.
By the time I received my new Ruby 2...the Ruby 3 carts had been out two months. Yes, I did verify it was new with Benz. It was the last one they sold...or so they told me.
Brick-and-Mortar dealers that behave in this manner are a pet peeve of mine. There is one locally who, because they have the local and statewide markets for a number of high-end makers compleatly sewn up, feels that it is OK to mislead and abuse his clientele. If you don't like it, too bad.....the only way you'll get the gear you want is to buy it from him. And if you try to go around him to another dealer who offers better service and care...he'll block you. (Non-compete agreements are nice in theory...in actual practice, though, they cause as much harm as they prevent.) In fact, he did it to me again just three weeks ago.
All of this goes on at many brick-and-mortars whilst they simultaneously wring their hands and bemoan the fact that their business is going to the web.
It seems a screwed up business all the way around.
....sT