Bad customer service and online store.

I placed an order online on the 26/31/2021 order no: *** Tax invoice *** , 3 items were dispatched on the 26 as

Today Dawn wing courier company delivers 2 items , I call the web support at 12:41to find out where is my Dstv decoder then I get advised that the complaints department will look into the matter and call me aback, past 1pm no one still hasn't called, I send an email to websupport after i speak to the courier who advised that only 2 items were dispatched to them cause the waybill boxes are too small to carry 2 items instead and driver confirms that he only received 2 while the invoice number states 3 items were dispatched, I ask that game advises no responds to my email. I then call the web support again this time I speak to a consultant called Mpho who puts me on hold for 20mins while checking what's wrong with my order, he comes back and says that there are out of stock, they will have to refund me, I just need to send my banking details to web support email, I tell him that I have been communicating but no one is replying to my mails and what happened to my decoder cause according to my invoice and order history online it shows that 3 items were dispatched. No one has bothered to call me back and no one cares about the stress, hustle and inconvenience cause to me. No one is taking ownership and calling me as the distraught customer.