3 Day Late Delivery, VERY RUDE STAFF!!!

I placed an order on Monday, 4 May for NetFlorist for 2 hampers to be delivered as a sympathy gift for someone who lost a loved one. I placed the order before 8AM on Monday, I sent them my proof of payment and after an hour when I had no reply, I contacted NetFlorist and spoke to Nollo who then told me she would look into it and get back to me. Hours passed and I phoned again just to find out Nollo went on lunch and never bothered to contact me. Then I spoke to Njabulo, he said I can resend my proof of payment to him upon which he also took hours to get back to me. I spoke to him again at 14:30 on Monday and he informed me that my order would be going out on Tuesday 5 May. I sent him an email first thing on Tuesday morning asking him to let me know what is the hold up upon which he rep**** that he will get back to me. Hours later when I called him again, the problem was with their accounts department. It is now Wednesday 6 May, 3 days later and my order still hasn't been delivered. Now that I try and phone them, they keep slamming the phone down on me!!! This is UNACCEPTABLE and absolute TERRIBLE service. How do you slam the phone down on a customer? I have yet to speak to someone