Poor Delivery Service

I placed an order online on 27 January 2018. After placing the order, I sent an email to ********** to provide them with additional information with regards to my location and to inform them that they need to leave the package with security and that I am not always able to answer my phone at work. I then receive a reply from USN saying that they will relay the message to their courier "Dawnwing". Days go by, no package arrives. I decide to email USN once again to ask them what going and they say that Dawnwing were trying to call me before they delivered. This made no sense because even the reply stated that they informed Dawning about my additional instructions. On Friday afternoon, I receive a call from a Dawnwing employee about my package. He said that they were trying to reach me but could not and this is why they could not deliver my order. I explained to him that I informed USN that it is difficult for me to answer my phone and that they should just leave the package with security. He told me that there was no notes or communication from USN to suggest this at all. He asked me if I was working tomorrow(Saturday) and I said no but I will be at home tomorrow. He said that if I gave him my home address, he would arrange for delivery on Saturday between 9 and 12. At 11:30, when no one arrived, I decided to call Dawnwing. The employee said that she "thinks" the package is still on it's way and they do deliver after 12 so they package might be en route. No package arrive at all and not even a phone call from them to state that they will not be delivering today. This is thee worst service I have received when purchasing a product online. I still have no idea when or if my package will eventually arrive.