The company that sells people lies!!!

Cell C is the most awful cellphone service provider. It is really pathetic that such a big company cannot seem to get it right. Everywhere you look there is a bad review about Cell C. All you guys do is sell people lies. I would really like to know how at the end of every month I get an invoice that always has a different amount which is the complete opposite of what I have signed up for. I would like to know where you guys come on with adding extra seperate charges! I have a contract with Vodacom and I get billed the SAME AMOUNT every month!!! I regret getting a contract phone with Cell C and I cant wait to reach the end of it! You guys are ***********!