No end to the excuses and promised feedbacks

So I ordered a sunglasses from cosmetic SA on the 4th of December with the promise of 3 to 5 days delivery..... Today is the 18th of December and I have not received anything. All I get is we are dealing with a 3rd party who is in charge of delivery and I've phoned this courier company a million times with no answer. Now I must chase around for the item I paid cosmetic SA for. There's no call back to explain what is going on and why I have not received my order. I have to chase courier company which gives u the run around. I just want what I paid for or my money back. It's a disgrace really. I'm so tired of phoning all these people. Please just refund me. Please