OpenSky review: zero customer service

I was trying to place an order and it kept saying my address was incorrect!
We have had the address for over a dozen years. I tried different ways to type the address and finally gave up. Went in search for a customer service number. It does not exist on their site. They want you to email them.
Ok fine,
in the middle of placing an order I send them an email. I get a return email with their "help" link (already tried the "help" link before I sent the email.)
The email said someone would be in touch in 3-5 days.
This is not my first rodeo. I buy more online than in stores now.
Bottom line:
If there is no customer service back up- DO NOT BUY FROM THEM!