Online sales delivery a pathetic nightmare

Totally unimpressed with the online delivery service from such a large company. I ordered very urgent stock for my business with order number *** on the 9th of November. Was then told that the latest delivery date would be the 14th. To date I’ve been calling, emailing, WhatsApping and all I keep being told is that they are coming. I have no option to cancel this order or get any feedback regarding it. This is so pathetic though, I’m more in disbelief because it’s from such a large “reputable” organisation. Anyway maybe you’ll reply to me better on this app, kindly advise when I can get the stock I paid for or my money back.