Is Vencano a Scam a Scam? Review of the Online Clothing Store

I ordered 3 dresses, 1 was fine but the other 2 weren't. I paid £60 and wanted a refund! It took me 2 weeks to get a return ticket after I opened a dispute with PayPal. I got an email saying if I cancel my dispute they would reimburse me immediately, but 3 weeks later, no refund and they are not replying to my emails.