Poor online system and service

This is a bit ridiculous, not to say the least. How can you sell products online and, and this is a big AND send me a sms that my order will be delivered today and then, don’t pitch up not let me know and then after I wasted my time to wait for the order and had to follow up myself come with the excuse that there is no stock. If there was no stock why not say online out of stock, or check for stock before processing and THEN SENDING ME AN SMS THAT MY ORDER WILL BE DELIVERED TODAY. ABSOLUTELY RIDICULOUS!