Walmart Canada Cancelled order, increased price Ontario

I ordered area rugs through website, clearance available so I ordered more. Started getting the cancellation emails and ultimately they cancelled the entire order citing "pricing error online". But I am free to go back and reorder them at triple the price. Ya, NO. In fact the only return to your website will be to delete  my account. What major retailer does this LOL. Literally laughing.

Call customer service, let him know that I had an order cancelled. If he could even stray from his script for two breathes, just kept repeating same thing.  "Ma'am we had to cancel because of a price error. " Dude, I can read the email but I hadn't even told you why it was cancelled , yet. "Ma'am, we had to cancel order because of a pricing error on the website. I didn't mention why I was calling, guessing there were a lot calling for this reason?  

Never had any of these types of experience with any other order site. Even ones I was skeptical to order from. Walmart should have been more legit. Meh, easily enough solved.