Athleteshop, an internet retailer selling sports goods, has ceased trading.
Dorset County Council’s Trading Standards service has received a number of complaints from customers who have not received their orders.
The company used a return address at Freeland Park in Lychett Matravers, Dorset, but was actually based in Holland.
Customers who have paid using a credit card should contact their card provider to ask if they are eligible for a refund under Section 75 of the Consumer Credit Act.
Those who paid by debit card should contact their bank and ask if they can be refunded under the chargeback scheme.
Further advice can be obtained from the Citizens Advice Consumer Service on 03454 040 506.