DONT SHOP AT ZANDO

I have ordered online at Zando. Delivery time for my order is between 2-7 working days. My order was placed on 17 May 2018 (almost a month ago). I have been sending emails, which remain unanswered. I have been calling their customer services, which has led me to "we don't know what happened to your order, we will check and get back to you". They have not been calling back, they are not responding to my emails. I have been holding on to get through to them for more then 25min at a time. I have mailed them to request a refund, and still not getting any replies. No questions were asked when I paid for my order DIRECTLY after placing the order, now I find it IMPOSSIBLE to get my order from them, or to get my money back. No joy from these people IF they do decide to answer the phone. What do I do next?????