Yea I am in same boat.  I have m20's on order, the 45th model as well, and I have yet to see anyone get them nor hear about shipping.  Whatsminer has some good miners and very reliable but I doubt I will be ordering again based off this.  I'm sticking to bitmain.  1 month of downtime because of the miners I ordered not running was a good amount of money to me and it seems like no compensation is being offered.  The same price of whatsminers I can get bitmain miners in stock ship same day practically.  Very piss poor management this time around from microbt.