Bad feedback due to agent NOT responding to my ori

Hi<br> I called Cell C about 2 weeks ago to complain that my airtime was disappearing even though I was making no calls nor surfing the net nor engaging any \apps."I was assisted kindly and sent an SMS upon which I acted by ensuring that every update etc was disabled. The problem persisted and I again phoned Cell C this week. The agent heard the whole story again and escalated it to the next level. I asked if I was being charged for Whatsapp which should be Free. I eventually received an SMS on 9 July saying \""kindly be advised that you were not charged for using Whatsapp"