Unshipped goods and no communication

Yesterday I bought 3 items drom Group Buys and paid immediately. Shortly after they had received the payment they sent a message indicating that the order has been cancelled because the payment was declined. This is not true. I have tried to reach out to them since yesterday night but no response. I have responded to their emails, wrote to them through their chat box but they do not even acknowledge. I am disappointed. This is a ****.