Long story short, cancelled sky and the decoder was collected start of November. As the account was in credit attempted numerous times to get this credit refunded however eaxh time get an automated response from sky stating the decoder has not been received therefore refund not able to be done. 
Anyone else had an issue with this with sky as well? Seems absolutely absurd that the decoder that was returned 3 months ago via a sky provided bag with tracking is unable to be found “at the warehouse”.