I think turning point in this match was Imran Tahir's last over which made the big difference. Rohit Sharma was caught and bowled by Imran Tahir and followed by Suresh Raina's wicket. South Africa displayed very good performance, not only in the first half but also in the second half. Young Rabada impressed everyone by his excellent bowling performance in the last over.
Yes it is correct. Indian's screwed up by them self even after playing quite good at the begging. It shows that this indian team do not have a past experience on how to manage the last few overs. They should have targeted to finish the match well before 49th over so they can be safer side but any way last 10 overs was indian run rate was not so good. Indians looks like need to learn now the basics of cricket.
Agreed with you that India didn't tried to finish the match in 49th over, they drag it till the last over and put their self into the trouble. I was surprised with the Dhoni's thinking, he didn't tried for big shots at the right time. Dhoni scored only 31 runs from 30 balls and looses his wicket at the crucial time, India made few mistake in last 5 overs and South Africa succeeded to take advantage of these mistakes.
