Complaint about vodacom incompetency on Tuesday and the following day I receive a call from Vodacom, what a disappointing

Complaint about vodacom incompetency on Tuesday and the following day I receive a call from Vodacom, what a disappointing. They want to put blame on me without doing proper investigations. Gave them the facts about my query and she promised to go back, investigate and call me back. To date, still waiting for their call. Vodacom don't want to take accountability regarding my query