paying extra on my contract

<p>in January i took out a data contract (upgrade) from Vodacom Waverley plaza Pta. The salesman Chris told me I will pay R150 extra at end Jan coz of the switch to data from a normal contract and from Feb I will only pay the R299pm. End Feb I paid R710. (ive got another contract of R230pm). i paid that amount. End March i paid R710 again. I called the branch and Chris was very rude. I asked to speak to the manager Fred. Fred told me that at end March will be the last time that I will pay R710 because that is the remaing balance of the previous handset. this month i went in to my statement again and again the account is the same as the other 3 months. so for 3 months i am paying R150 pm more that what the contract says. so in other words Vodacom is taking money from me that they arnt supose to. I called Fred again and he said he logged a call. i am sick and tired of big coporate bussinesses trying to rip client off and taking our hard earned money. sort this out. asap. i wont pay a sent extra for this. otherwise vodacom can cancel this contract and i will gladly return their device and switch my bussiness to cell c or mtn were they wont take extra money....</p>