Poor service, poor communication and bad customer service

I've never been so disappointed at a courier like I am now. I was told that I would receive my package within two working days by the person sending it. Two working days later I call the courier only to be told that my package has been loaded for delivery the next day. Stay at home all day to receive a package the next day and oh no the package does not arrive. I have been calling the call center everyday since Monday and everyday I'm told you will receive delivery tomorrow as its scheduled for delivery. The call centre agents always take my number and tell me they will get back to me and never do. The last lady that I spoke to on Friday 6 August even told me her name Samantha and I felt hopeful that she would call but guess what like all the others she didn't. I even asked if I can pick up my own package so that I can stop calling them and I'm told I cant. the worse thing is the fact that it seems like the people at the call centre do not appreciate how not receiving your package affects you. The worst thing is even when I'm trying to help get my package to me, they wont allow it. I'm not even mad anymore I just want a resolution even if it means fetching it myself. As a courier company that promises people that they will deliver in 48 hours they have failed dismally. I would not even recommend them to any one. The website promises that you will get notifications on your delivery, I haven't received not even one notification about my package, all the updates have received thus far are as a result of me calling to find out when I can expect delivery. And lastly the one thing I do not like is the way the call centre customer service agents reply to us as customers. On 6 august when I called the first agent told me my address was wrong and they would fix it and then make sure the delivery is prioritized, then when I called in again I spoke to Samantha who just said you can expect delivery sometime next week. So I'm not even sure when next week I should be home so that I can get this delivery. Its just sad that everyday when I call I'm told the delivery will be prioritized the next day and then it doesn't happen. No courier should take over a week to deliver a package