Bring 18 ounces of cold water to a boil in a small saucepan. Add the tea bags and let steep for 10 minutes. Remove the bags and discard.
Pour the wine into a large container or pitcher. Add the tea, grapefruit juice, pisco, half of the diced mango and all of the orange slices. Cover and let sit in the refrigerator for at least 4 hours and up to 24 hours.
Just before serving, add the remaining diced mango and the berries. Serve very cold over ice.