Pathetic service from Performance Merchant

Terrible experience purchasing from Performance Merchant. I made a payment and was told my order was shipped. Few days later I was told the courier is delayed and I will get a refund and I can pay when the item is delivered. Last week I got a message asking for a 50% payment as the item will be delivered the next day. I made the payment and I did not receive my order the next day. They do not respond to emails and do not have any contact numbers to phone and follow up.