Dishonest service

My number *** That number hasn't been used over two years was due for an upgrade. So i opted to cancel it since i had take three other contracts and didn't need this line. When i called to cancel end of Feb,I spoke to Ronnell from retensions, she promised a discount on the line and the other existing lines where i would save R700 instead of just the R400 for that line. So i opted to keep the line, however the month end that didn't happen. Then called and spoke to Shaun to rather cancel the thing. And nothing happened still. End of march i spoke to Siya and requested call recordings and refunds since the upgrade was due and nothing still happened. And now yesterday I was debited a higher amount than usual. I don't know what is happening with the retension department, but id like my money deposited to my account and the line canceled as i look for another provider.