Undelivered order and no communication about it

Order paid 13.03 worst case delivery is 6 working days. No matter how many emails sent to 3 possible addresses plus online robo chat bot complaint form submitted - no communication has been received. I recommended to the buyer an 85 year old that I'd do the order for them as PCLinkshop has great reviews- now she's spent her money and has nothing to do all day as she's not too mobile and lives to play word games etc. Disgusting service.