Cell C
NO Response after promising

I would once again like to direct Cell C to my previous complaint, which I was promised a call on almost two weeks ago. Still hasn't happened. Time to go to a higher authority?

Here is my previous complaint, which I have commented on but nothing is happening, no calls, no feedback, absolutely no CARE:
https:///cell-c/complaints/throttling-of-bis-three-months-now-1162759