Given the task definition and input, reply with output. In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.

Worst seller I have ever bought. They are charging around 20% money if we return though the item is in good condition. There is a good deal I found in Costco and returned the item in 2 days after I got. But they did not refund my whole money. Very disappointed and dissatisfied. Single Star for seller:( :(
Worst seller.. Never ever buy anything from this seller.