UPS Delivery services

This courier company is annoying and their process is so disorganized, online when I check and trace my parcel it outlined that i'll receive my parcel by the end of today , I call in to find out if the is no invoice to pay the consultant tells me she cant see anything , she transfers my call to COD I hold on that line for more than 15 min no one was answering and it was after 8-am (operating hours), then I decided to call again at 8:45 , I'm told there's an invoice to pay and I can only get my parcel on Monday I must 1st pay the invoice but i say why they didn't earlier communicated their processes and that they have changed they no longer send a speed-point with , yet their online says delivery date is today . This is not the 1st time I'm having a terrible service with this company the other time I received my parcel after 2 weeks, it is such an inconvenience zero care