Had the similar crap happen with a dishwasher purchase in '22. I actually paid the online sale price. When the receipt shows up with the expected delivery date, I find they charged me full price! WT............. el? $200 more!
I wasn't very pleased to say the least and called to P&M. So, they refunded the frickin' SALE price instead of the full price which I was charged. After over an hour of phone yacking and on holds, they weren't budging off the full price.
I didn't get the item. The $$ finally got straightened out. I was issued a check for the $200.
So, I bought one from ABT, delivered the next day.