I ordered some bio-degradable cutlery and cups onl...

I ordered some bio-degradable cutlery and cups online which I needed for my party.
every time that I ordered the website showed that my item was available, but after some days I received an email that not all items were available and they delivered my order partially, also instead of sending the rest of my order later, they cancelled them.
so I had to place my order 3 times.
the third time the estimation delivery date on my order was November 21, but I did not receive anything and when I called customer service, I was told that the item is not in the stock right now and it can be delivered in December which made me to cancel my order.
the website is not up to date and shows all items are available.