Poor Service

I was approved for a price lock deal in May 2020. To date they have failed to deliver my decoder. I've been send from one agent to another and blame being accosted to the courier company. Everytime they undertake to escalate. It's been more than a month now. Having been with their client since 2006 I've always received my orders and they have previously delivered to this current address which their *********** courier address says it's invalid.