Ordered desks and chairs on 5 day delivery on 12th...

Ordered desks and chairs on 5 day delivery on 12th June. Received an email a number of days after placing the order saying the chairs were on back order and would be delivered by 2nd July (today). Emailed and tried calling several times with no response to try and get a different type of chair. Desks arrived a day later than promised and then today one chair has arrived but no sign of the other one. 25 minutes on hold to get through to an unapologetic miserable man to say he'd dispatch a replacement for 5 working days. Useless. Avoid.