Always changing costs on account

I have the following questions I would like to ask of the Telkom team, the lines are constantly busy and I simply cannot get to a consultant to answer these simple questions:<br> <br> 1) On our March account, we were charged a line rental of R 209.65 for both of our lines. On our April account this amount was R 48.92 + R 180.91 for both lines. On our May 2015 account this amount is now R 235.97 per line. If this is the result of a price hike, why were we not informed?<br> <br> 2) We are registered for a SupremeCall R500 package @ R 438.60 per month, up to February of 2015, we received a SupremeCall discount of roughly R 350.00 per month. Ever since March 2015, this amount has no longer been shown on our account and we no longer receive this discount. Why has this been done? Since this has resulted in a huge increase of our telephone costs.<br> <br> Prior to February 2015 our account balance was always roughly R 900.00 per month, from March 2015 onwards it has been on average R 1200.00 - R 1400.00 and we have not in anyway changed our monthly average usage.<br> <br> I look forward to your speedy reply, thank you in advance.