Overcharged!

So my story, Im app**** for a upgrade from 4mb uncapped to 10mb Uncapped line on the 5/6/2015... after 2weeks of back and forth, i was told its couldnt be done at that current time due to the port not been able to support it. <br> I was eventally contacted by a telkom agent on the 20/7/2015 saying that they have successfully upgraded my line.<br> <br> I recieved my lastest bill of R2705.4... when talking to a call centre rep she told me its pro rata and ive been charged from the beginning of June!<br> <br> 1. I was not told anything about pro rata when i asked for the upgrade.<br> 2. Why am i getting charged according to the bill for my 4mb and a 10mb line.<br> 3. Why was my email address changed when i simply upgraded.<br> <br> I need this to be sorted out i dont believe im getting charged correctly. And there is alot going on on that bill i dont understand.<br> <br> My details GS Phillips<br> ***