Totally clueless customer services and failing delivery mechanism

I placed an order on the 2nd June. On the 24th I receive half the order saying it was split. It's already 2 weeks late, this after receiving an email saying the order was split. 2 more weeks later I send numerous mails on the website asking where's the rest of my order. They then has the audacity to send me an email saying it was delivered & signed for at 9:15pm with some random signature. My wife signed for the initial one. I just received their "So-called" proof of delivery. It has my wife's name written incorrectly with "SOB" where the signature was meant to be. This time the delivery time written was after 7pm. I just want the balance of my order but everyone there is f@#$*(g clueless. How is this customer service? There is clearly a large problem & not one of their customer service agents is equipped to deal with it properly