Received wrong stickers

I have ordered lots of circle sticker from Sticker mule and got rounded stickers every time. Thought this would be the same, but received rounded corner stickers instead of the circle sticker I'm use to getting. I put in a order with a similar sticker design weeks ago and they came back fine. But this order went a different. These similar designed stickers are for my nieces. I hope Sticker mule can make this right.