Shocking customer service

I placed an order for wood with a cutting list on the 19th of October and told it would be delivered on the 29th. I called on the 29th only to find out they hadn’t started cutting and that an item was out of stock. I requested a refund on the 29th for that item. Saturday half the order came on Saturday and had to send back items that were not cut only to be delivered on Monday. I have sent WhatsApp, email and a Facebook message but have not received any reply. I have called your agents who have no idea how to help me and say they will call me back but never do. Your customer service is appalling.