Full payment - delivery overdue, no contact

After first payment of the lay-by option I got misgivings as to slow response time to queries. Having been pressured by my husband I continued and paid faster to get the item as he felt it was a very good price. Now delivery was due Friday, latest Monday morning but nothing and it's Tuesday afternoon 2:30 PM - queries by both me and my husband are going unanswered. I see the bad reviews of others on here and I am getting a sinking feeling. I will re-post if resolved, but so far I am unimpressed at no feedback.