Poor service

Okay, I have a data contracts with vodacom, last month i called them to cancel one of these contracts but the lady i was talking to convinced me to cancel the other contract instead of one I intended to cancel because it have an upgrade. I have been waiting for that upgrade and calling their upgrade department which have been telling me it will happen on the 8/6/18, which it did not happen. Again they told me it will happen on the early hours of 9/6/18. They are totally playing mind games and making a fool out of me. They have messed up what i have planned and its not cool at all.