Pathetic courier company

Received an e-mail and a text to say that my package would be delivered today, between 08:00 and 17:00. At 16:45, I decided to call. I am no 3 in the queue. I wait. Just after the agent connects to a call, I can't even read out my tracking number and the line disconnects. I telephone back. I'm no 5 in the queue. Eventually I get to no 2. I wait again. Then the call drops. I waited at home the whole day. Why send a message to say that the parcel will be delivered that day when that isn't correct.