For context, the shop has no reviews before today. They sell keto sweets and the photos look awesome and it sounds like they know what they are doing.

However, I received what was supposed to be lemon bars and they are just disgusting little squares of raw almond flour. They look nothing like the photo, and overall very underwhelming.

They have no reviews yet, and I don't want to be that asshole that gets them started off on the wrong foot, but I definitely am not going to ask for a refund because they did make and ship the product and I'm not trying to make them lose money. Should I be this worried about leaving a bad review for someone's tiny shop?