Bad customer service

Buffalo is bad courier service and this is not a first time getting a bad service from them on the 12th sep I got a notification that I will receive my delivery in the morning I was home the whole day just at 4 I decided to go to the shops and I didn’t have internet connection only for the driver to arrive few minutes after I left their driver never tried to call me on a direct call , he texted me on WhatsApp even though he contacted me on WhatsApp he saw that the message was one tick but still continued calling me via WhatsApp this is the second time their drivers not using direct call to call me by relying on WhatsApp call that’s very terrible I had a very important event with the items in that order I couldn’t deliver that affected my business and at this stage I’m very angry at them