upgrade that i did not do now my bill increase very month

im sick of paying a bill for upgrade that i did not do. im been past from the one agent to another , i send everything to ********** it a month later still no reply , I received my bill for this months now there is n R90 different between this months and last month . phone again been past for normal call center to upgrades no one can help me . i paying R1514.00 p/m i do not think its fair that vodacom treat there clients this way . i when to just call in Meyerton to sort out all my phone numbers noooooo service from there side helpful when you doing a upgrade but when you have problems they climb under tables not to help you . may account been messed up and no want wants to get it fix i paying for thing that i did not signed for. no one can give me the upgrade documents for the upgrade i'm losing time at word for this to bee sorted out , its 3 months now and nothing been sorted out .