Some of this may be specific to the dealers in question, but I wonder how of it is a function of the general "pandemic economy."
Here in central NY, we have been getting callbacks for all manner of goods and services, even for previously reliable providers, or providers who text saying when to expect a call.
If supply chain issues mean you don't have stuff to sell (or have multiple buyers for every item), and labor issues mean you don't have services to provide, your incentive to communicate must diminish.
There's worse problems in the world, of course, but it is a drag.
Others experiencing similar?