Poor parcel tracking abilities and delivery times

I used to get an approximate time and day for deliveries. Now I just get a vague 8am to 5pm delivery time on the day of delivery. There is no option to track the driver or follow up call from the courier, or any way to contact the courier. Emailing and calling the help centre was not very useful either. I would like to be able to plan my day around an approximate time instead sitting around all day hoping I get my delivery.