Manager gave the worst service

I went to the store at Vodacom Mall@Reds on monday to report and issue that I will billing and with my line being suspended and then the manager (I dont even know her name) took my details down and promised to call me on Wednesday with feedback. When i called her on Thursday afternoon I had to remind her who I was and what the issue was about - when I asked why she did not contact me back she started telling me that she was busy and called to head-office and that she started late yesterday at work. I then told her that she was giving me excuses and that I did not believe that she contacted the call center since she cant even remember who and what my issue was! She became defensive and started shouting that I must then call someone who I think will assist me since I feel that was. I gave her advice that next time she has a client that she promises a phone call she must just call and apologies for not having any concrete information and promise another time.

The service received is bad and I will never deal with Vodacom as long as I am staying in that area.

Thanks