Cancelled Contract and Still over billed!!!!

My contract with Telkom Mobile expired towards the end of last year. Prior to ending, I received calls for upgrades, but I wasn't looking for one so I wanted to cancel and go on the normal month on month. I had to call the call centre to cancel after which I was told I would go on the month on month Smart plan 100 (but with the 5 gigs), then on the other instance, I was told I would go on the normal smart plan 100 min and 150mb which was fine with. I was told my bill would be R99. But for the last 2 months, I have been billed close to R460 and another sms just received for R460, so that is close to R1 500 of my money GONE! This weekend I had to go into the Tygervalley mall branch and they said Telkom is miscommunicating with clients on the 5G special and the best way to cancel is to do it through the store. I cancelled (I hope this is the last!!) this weekend but it will only be effective by end of March, which means more money off my account.<br> <br> TELKOM, if you getting this, I want a refund of my money because you under promised me to cancelled, you guys keep calling the wrong number, yet on upgrade you conveniently call my right number, and I want what is fair and what is right!