Online service nonexistent

Ordered bedroom linen to be picked up in-store in 3 working days, on Tue 14 Nov. By end of day Friday 17 Nov, online status was 'shipped'. On Monday 20 Nov, 2 of the items had been delivered (as far as the store staff could work out). Decided not to take them to avoid confusion. Online status changed to 'Delivered'. Multiple online queries sent. Not a single response / email / sms / phone call. Phoned store, assistant very helpful, she phoned the online call centre but no response. Today, Wednesday 22 Nov, still no feedback.