Inconspicuous Communication by Telkom

Hi there. On the 28th of March 2016 I was inconspicuously sent an SMS from TELKOM stating that you would be increasing my spend limits to an additional R999.00 without my consent. After not being notified about my orginal spend limit (100 minutes) being reached my balance kept on growing without my knowledge. NOW as opposed to the R429.00 I usually pay per month, I have been charged R1054.00. I am displeased with your inconspicuous communication and unhelpful customer service over the phone. I don't believe it to be fair practice that I pay the ridiculous amount due. I want to pay my usual, monthly bill and not this fabricated figure. Regards, Chad Barry