So disappointed in your delivery service

I have purchased from Superbalist before, but this time I don't know what happened because they are usually so efficient. As usual I placed an order and I got an email that I will be receiving my parcel on the 11/12/15 I even called to get the parcel number and contact for the courier because I needed to make sure they were going to arrive before I knock off as I had given my work address, and I was going to use the item for a function on the 12/12/15. The courier people assured me that it was out on its way to be delivered by end of business as stated by Superbalist. They did not deliver by end of business, so I called again and they gave me some cellphone number to call, apparently that's the driver, he tells me he had too much workload but he will bring it between 9 & 12 on Saturday, I took that because I at least it would still be on time for my function. I'm am still waiting, I made countless calls from one driver to another no one seems to have it with them now all of a sudden. This is just ridiculous!