South Africa spinner Tabraiz Shamsi took five wickets to help his team bowl out England for 101 to win their decisive Twenty20 international by 90 runs at the Ageas Bowl on Sunday and take the three-match series 2-1. South Africa were put into bat and scored 191-5 off their 20 overs to set England an imposing target and then skittled out the home team for a one-sided victory.