Vodacom once again prove to be *******!!

I bought a new phone yesterday. Part of the deal was that I would be given R300 airtime. When I activated the sim card at about 1:30, I got the sms that I had indeed been awarded the airtime.<br> <br> I made a few calls, and surfed the net as well. When I checked my balance last night, it said that I had R70 left, however this is impossible, as I hardly used the phone.<br> <br> This morning I made a few calls and checked Facebook. I then checked my balance again, and it said that I had R19 left. This is again impossible, as I had hardly used the phone.<br> <br> I phoned 111 to complain and was told by both the call centre agent and his supervisor that the airtime had been depleted as I have auto-update switched on. This can't be the reason as I also have auto-update when wifi is on ticked.<br> <br> The supervisor said that auto update automatically uses data when the phone is switched on, whatever Samsung you are using. This isn't true, as I have had two other Samsungs, and this has never happened. However, I have had airtime vanishing from Vodacom on several occasion.<br> <br> This is totally unacceptable!! Please refund me for airtime ****** immediately!!<br>