No communication till customer enquires

Very upset regarding the manner in which Decorland handles business. Firstly I placed my order and did not receive it yet so I contactes them via WhatsApp on Friday morning, 31 January, the person told me they will get back to me. Friday late afternoon I still did not receive any feedback so I called. The lady I spoke to stated she'll phone me on Monday, 3 February, did not receive that call so I again in afternoon of 3 February I contact Decorland the afternoon regarding my order. Later I get sent back a message. Good day, The team advises that they do not have enough stock to fulfill this order. Which they have stated on email to the Gauteng team that they only have 40mm All-in-one Double Curtain Track With Pelmet- Silver - 2.5M x 4 and 40mm All-in-one Double Curtain Track With Pelmet- Silver - 1.5 M x 5. I see your order has the 8 of the silver 1.5m which you need 4 to be 1m and you needed 5 of the 2.5m. Now my issue is this, I as the paying client had to contact them 3 times to get feedback. Why must I as a client them. Secondly they gladly accepted my payment but now they don't have stock 🤔 why is their site not updated to show stock quantity so that payments not get taken if they can't full the order😡 and absolutely no communication with me as the client to advise on the issue I had to contact them!!!