Cell C Cape Gate no service

They promised me a deal that ended 2 December. I was in the shop on the day it ended. The manager Mathew told me that I could get the deal later in the week, although it ende. I heard nothing from them and had to call Monday, Thursday, Wednesday. Thursday the manager would have called me. No call. Friday they told me the deal ended and they can't help me. I had to phone Saturday only to hear that they cannot help me over the weekend. Only from Monday. Worst service ever.