Too many issues to mention

I've been having so many issues it's actually unbelievable. Firstly, I don't get a waybill when I book courier, as it just deducts the money and throws me back to the home page. Then I have to call the call centre and make sure it was booked successfully. Without a waybill, I have no proof that the parcel was booked to be delivered by a specific date. With my last booking, I realised I made a mistake by accidentally using the delivery address as the collection address and visa versa. I immediately called and asked if it's possible to just switch the addresses. They said it's no problem and it has been switched and they will arrange for collection. Days later still no collection. I called yet again and the call centre staff is extremely unhelpful and sometimes even rude. They finally collected only to deliver it at the same address the following day. I knew that I was going to lose the money for the courier but let me just book a new courier with the correct addresses. Days later and still no collection. When I make a booking, it says it will be delivered by 8 December for example, it gives you a "delivered by" date. When I ask call centre staff why it was not delivered by the date specified on the website when booking, they say the day of collection does not count as a day and that it takes 2 to 3 working days after the collection date. But why is it advertised as "delivered by date" if that's not the case. Isn't that false advertising?