Item purchased online is out of stock

Purchased a gift online and was able to choose the product. After 5 days my item did not arrive. Called the 086 number and the agent said that the item is out of stock. Now why was I able to select the item if it is not in stock. That does not make sense as this is required as a gift. My order was placed on the 28th of January and I called on the 5th and today the 11th of Feb. After trying to speak to an agent 3 times I gave up as the line is so noisy you cant hear them. The only thing I was able to hear is the item is still not in stock. I did not receive a sms notify me that there was not in stock. so now I don't have a gift to give on valentines day as this is the service that Edgars -Red Square provides to its customers. They don't care about customer service.Online stores like zando, run away sales, takealot are so efficient and the order if is not in stock it does not allow you to buy it has it shows item out of stock.