Vodacom robs contract customers

Verry unhappy with vodacom contract....i.ve been contracted for 4months or so..and already i.ve paid over R2000 and I still struggle to understand how come.im supposed to pay R249 as it was advertised on paper..but believe me you i.ve never paid that amount..I The installment keeps going higher ever month and it's said to learn that everything that they say I'm paying for was never mentioned before I took the contract. IAM angry and cannot afford to pay vodacom due to them not sharing every detail and monies of a contract phone. I want to cancel the contract.. unfortunately they said I will need to pay a lump sum that I won't even afford to pay. It's sad that I will be forced to change my bank account so that they no longer debit..and thAt I will be blacklisted because of being DECIEVED by Vodacom.... IAM deeply sad and feel like i.ve been ******.