I too received a notice by Outdoorsman's Superstore that the
Mossdberg 590 Shockwave was in stock. I purchased one last
Wednesday, 05/17. Their website said due to the demand,
it will ship in 3 business days. I got a notice from them that
it shipped Monday, 05/22, and I'm expecting it to arrive for
pick up this Friday, 05/26. Looks like they meant what they
said on the shipping.

I'm sorry you got the run around.