Customer service

I am extremely unhappy and disappointed with the service we have received with Supersonic since we have placed our order. It took them a few days to acknowledge the order on the system along with the payment that was made. We have received no form of corresponds from them regarding any problems or updates. On the 13th we called them and they said that the order has been sent out and will be with us within 3-4 days. On 20th I called them as we have not heard anything from them and the website said the order was sent to the courier. After a whole day of getting no answers from them and saying that they have sent the parcel to the courier and the courier saying they do not have it, they have informed me that the parcel is still with them. They took almost 36 hours to approve an address change and have entered my details into the system incorrectly without noticing their mistakes which resulted to me not being able to receive my order from the courier. I have tried to contact them again but I can not get through to them. It has been almost two weeks since we have ordered and we are still without Wi-Fi.