Worst customer service

Received worst service. Went for upgrade 26 March 2016, sim swap never loaded by consultant,waited for 5days,called customer care,quickly assisted me and sim swap was done same day. 2nd complain,on my contract i should receive 6GB data for 3months. Called customer 1st of the new month,not loaded yet,after speaking to call centre and upgrade call centre,i needed to speak to the vodacom outlet that helped me with upgrade. I'm still waiting for feedback from the manager, they never called me back. Why should the client keep on checking if the problem is sorted? This is not acceptable.