I made an order for a laptop battery ( http://www.storebattery.co.uk/lenovo-ideapad-s210touch-series-10.8v-36wh-laptop-computer-batteries-in-uk-united-kingdom-p-109223.html )
because i needed an upgrade. The original battery for the lenovo s210 in a 24Wh and the one i bought was a 36Wh as it's on the description and title of the product. The price is also higher than the 24Wh batteries.
I contacted the company in order to confirm that the battery is a 36Wh one and they assure me before they sent it. After 1 month the battery came and it was a 24Wh one. I wrote them back and they admitted that they sent a 24Wh one and they offer a refund of 3USD...
I filed a case in Resolution Center (paypal) and they (paypal) responded back without asking anything (there wasn't any invoice only a pack as "gift", info, messages) that i can get a refund of 2 euros as long as i send the battery back with shipping costs on me... (meaning that not only i am gona sent the battery, but i will also get only 2 euros out of 75.63 dollars i pay. I am sure that they didn't even read the case in paypal...)
The case is also sented to formal authorities in order to protect other buyers.
I have message logs, and everything else proving their scam.