Poor service

My contract was up for renewal but I decided not to take a new device but asked for retain my minutes and data. I was told that I will pay R89 per month and I even repeated this on the call to verify this with the consultant and he stated that I will be getting my 150 minutes and 2Gb of data as per my contract. On 1 May, I was only given data and no minutes. I called Vodacom and was on the phone for 30 minutes. They said they will load the minutes within 48 hours. Over a week later still nothing. I called again yesterday and held on for 15 minutes with an agent and the call was transferred back to the automated system. I then was on the call for another 30 minutes and the agent promised to call me back but did not. I am paying for a product but not receiving it. Your agents are quick to sell a product but very poor after sales service is rendered. I am tired of calling your call Centre and holding on. I don't have the time as I am busy with patients. I am also tired of recharging continuously when I paid for minutes which I have not received. Will anyone be able to assist or I rather just cancel everything.