The DA has shut the door on negotiations with its GNU partner, accusing the ANC of “losing control” over its Gauteng deployees in the establishment of government of local unity talks.This declaration of strained relations comes ahead of the special sitting of the Tshwane council expected to elect a new mayor on Wednesday after an ANC sponsored no-confidence motion which axed the DA’s Cilliers Brink. In a letter written by the party’s federal chairperson Helen Zille to ANC secretary-general Fikile Mbalula and NEC member David Makhura, she declared that the DA had formally withdrawn…