Good move. You might call the manufacturer about the delay. I doubt that they would be amused.
The dearest and I tried to get quotes on replacement of our furnace. One supplier inspected and later got back to me and simply said that they don't want the job. Another came, inspected, and for months has been refusing to provide a quote. A third just says, nah, we aren't approved for that grant program. We are trying to upgrade our gas furnace to a combination gas/heat pump unit under the federal and provincial grant programs. The installation, by the way, is dead simple, lots of room, and no complications. The problem is that the grant programs are too complicated for installers to want to bother with.
These buggers are far too busy to bother with anything that sniffs of paperwork. Good thing our furnace still works. A friend of ours was not so lucky. When her furnace died, it was over a month before she got it fixed. Try that in an old house with no options for heat other than borrowed electric space heaters. At -20C.