Bad service, no response, still waiting for refund

I subscribed for 5g. I used it and discovered numerous technical issues, their network was pretty bad and didn't work as advertised. I requested to return the device which was after 7 days and was informed I would get a refund. It's now more than a month later. Their support agents are as useless as a glass hammer. They have never responded to my technical issues and have not refunded my money back. They keep closing tickets and provide no explanations and no responses. I would rate them zero. They don't seem to think much and don't realise that there's more than one way to skin a cat. They basically ***** your money and provide 0 star service.