Bad customer service

I made an online purchase on the 10th July. It was 4 items. Only 2 items was delivered. When I call to find out whats happening I was told the other two items were out of stock. I paid for them and yet I receive no notification whatsoever about it, no sms no email and here I am waiting for my delivery. The refund takes up to 5 days🙆🏽♀️ It’s the inconvenience for me. They should have just stated “out of stock” online or atleast let me know that my other items were canceled instead of just letting me wait for the delivery that’s not gonna happen