Sell defective stock

I purchased a new base set ( not a cheap one by the way) online on Friday evening for my son, he got his bedroom cleared up and ready for the new bed that was delivered yesterday. Delivery team didn't install it - which was fine, so when we tried we found the base is defective - one leg cannot be installed as the base doesn't have a slot in the base for the leg to slot in. What a joke - no QA or QC from both their suppliers, manufacturers and Dailabed themselves! Maybe this is exact the reason they have ''sales'' to clear out defective stock ? So my son had NO bed to sleep on last night - thanks Dailabed, you guys a great!Tnere is whatsapp support lines that refer you to an email adddress - so no use having that option, maybe can it