5G 24/7 Router

Last week you wanted my view on my customer service experience and the experience is disgusting to say the least. I have been sending emails to your customer support for the past two weeks and no one is getting back to me and to make matters worse, you are billing me for a device that was collected by the courier 3 weeks ago. Before I bought the device I checked if I was in a 5G area and your system approved that I was but when the device arrived it didn't work. So I don't understand now how I get billed for something that I didn't use and I have not even received my full refund as the device is not with me any more. I am waiting for my for my full refund from you as your device was returned to you before 30 days of purchase.