Complaint to vodacom

My name is Zanele I have a big complaint with vodocom. Am so furious and unhappy with vodacom really stressed out and of the month they will be deducting money I can't afford and they will blacklist me for their fault. I upgraded online April 20119 on a Huawei P30 lite before I received the phone I cancelled the order, I was told that I can upgrade on another deal only after 7 days as I was not comfortable with a Huawei that time. After days I received the cellphone via RAM service, I called vodacom upgrade I got the same lady she apologized said she was busy with other things she filled for it to be returned, I was informed between 7-14 days the RAM personal will fetch the phone. Even though I cancelled the order even before receiving the phone, vodacom upgraded my sim card yes I knew the contract I choose but did not understand why are they upgrading me even after cancelling the order. I called them was told not to worry they will change me as soon they get back the phone they gave me without my consent. Time passed after 14 days I called they said they will fetch the phone I stated that the problem to me is not the cellphone but the contract they have upgraded me to according to what I was told is that smart is unlimited data and calls but u can call them and they can make it to be rechargeable, and I use a lot of data as I am at school for now and airtime for them to keep me on this contract is a danger to me because am using money don't know . I called they promised it will change. Only August the 1st they took me back to my contract but I was paying for a cellphone I never received, simcard that was suppose to be changed and never now I owe them more than R3000, while i have been calling and telling them my problem no one has ever called me to fix my problem all they want from me is my money. I can't afford what they have rubbed me. Where can I find assistance I can't afford a lawyer