Why cant south african istores replace a cracked iphone 5 screen while in the USA its done in 15 min for 128 dollars this is not the kind of support i expected from apple i thought i bought the best , is this not the kind of thongs that changes your mind

Apple does not provide direct service for the iPhone in South Africa. Service there is provided by the authorized carriers. In the U.S., service is provided directly by Apple, meaning they have the ability to train and certify their own employees to repair the phones. That's not the case in South Africa.

If Apple does not provide direct support on South Africa this means their product haven't reached a significant amount of customers, so there's no reason to do it. Here in Brazil the situation is the same as South Africa, but they're opening their first retail store next month maybe, what is nice, this means that Brazil became a country where Apple customers are now a nice amount of people.

Actually, what it means is that Apple does not have a direct retail presence in the country. It has nothing to do with how many customers they may have reached.

The iPhone 5 screen replacement is still being phased in even in the US...not all Apple stores are fully trained to do this yet. Plus, the price is not $128, it is $149 (US).

Unfortunately this is a market issue, the Apple market has to reach the point at which it is profitable to do something, direct sales, direct service...until that time all the user can do is wait for things to change.

It's not an "excuse". It's a fact. Apple does not have a retail presence in South Africa. Get over it. I suggest you do your research and find out if whoever you decide to buy your next phone from offers repairs there before you hand over your money for it.