Rona review: bbq online purchase

They advertised a sale price reflecting the weber discount of $200. This is also offered at Home Depot and elsewhere. I buy the bbq online. A few days later the cancel the order as they have no stock. This is after I felt I had secured the product and also after the Weber sale ended.

I go online now, and the BBQ is still on the site online and it is at the full price.

Their customer service says there is nothing they can do.
Unacceptable.