Item paid for, yet no delivery

I placed an order and the delivery date has come and gone. I reached out to the call centre first via their WhatsApp line and the agent blatantly **** about the delivery date, despite me having multiple different sources of proof of the actual delivery date. I phone in to the call centre, the agent promises to call back within 10 - 15 minutes, he just needs to confirm with the Operations department. I received a VERY non-commital WhatsApp back saying there is no update on the system and they will keep me posted.

NetFlorist, is this how you treat clients? Last time I'm spending my hard earned money here.