You need to go through Houzz and their purchasing customer service area HERE (you can also scroll down to the bottom of your screen and click on Contact Us). Posting on a discussion forum is not going to get you anywhere!!

This is a discussion forum, not the customer service center. This is a link to customer support: https://help.houzz.com/s/contactsupport?language=en_US

Im looking for a delivery date of my purchase

Abt dot com. They are reputable. If you call them to order, they may give you a slight discount on the appliances over the phone. They aren't going to be the lowest price, nor the highest price, but low-baller appliance pricing is often suspect.