Telkom billing

In Dec 15,my Wireless device was not working, so I went to<br> Fourways Telkom Store, the service agent advised that they will need to<br> give me a new unit as there was a known fault with the current unit.<br> The service agent then advised me that there was no charge as it's a faulty<br> unit and he will replace it with Atel agp-kw125 wcdma 3g phone<br> Once he said no charge I said that is fine and he went ahead with the<br> upgrade or change of unit.So now I noticed that this unit is now been billed for on my account,<br> If that was the case I would off not bothered to get a new unit.<br> so we can clearly hear and see that the agent mentioned there is no<br> charge.Furthermore, I noticed that my data alert on my mobile or laptop does<br> NOT pop up to advise me that my data is finish and that I will be charged<br> out of bundle,I would also like Telkom to provide me with proof that I activated out<br> off data billing for the months off Nov & Dec 15, as my data billings<br> are why to high, without the alert that used to pop up is no longer<br> popping up.If my data was finished for the month I would know and be aware, but its now 2 months and my data usage is<br> going over the bundle without my activating it.<br>