Unacceptable service

I shopped online on Saturday morning. After receiving the wrong order I contacted the customer line twice that day after which I was told both times don't worry your order will be dispatched from Rosemead pnp. My order number was *** instead I got order number ***. It's Wednesday today and not a word of pnp. It's like nobody realizes that I needed the items I ordered that day and the fact that I was left with yoghurts and sugar and chocolates that I did not order or need at all. What is frustrating is that I complained on pnp website I contacted them via telephone and yet nobody bothered to respond to me. So it's OK to take my money for items I did not purchase what is the point of online shopping then. I would not recommend anyone to purchase online through pnp if this is the service you receive. Totally unacceptable