The West Indies secured the three-match T20I series with a second consecutive victory over the visiting Proteas in Tarouba on Sunday.
The West Indies won the first T20 International against the Proteas by seven wickets after a stellar batting performance from their top three in Trinidad.
South Africa managed to eke out victory in the second Test against the West Indies in Guyana on Saturday, securing the series 1-0.
The Proteas are in a strong position after day two of the second Test against the West Indies, led by a quality opening stand from Tony de Zorzi and Aiden Markram.
No less than 17 wickets fell on Day 1 of the second Test between the West Indies and South Africa in Guyana on Thursday.
The Proteas were denied a chance to claim victory in the first Test against the West Indies due to inclement weather as the match ended in a draw.