BAD SERVICE!!!

I was in need of a new cellphone and unfortunately, I could not get one on my own name as I was only working for a short while. My dad opened a contract on his name so that I could get a phone. He is the account holder of the contract and I am paying the contract payments from my bank account each month. My dad then also got himself a phone, this then means 2 different contracts. The problems that arose were that firstly, Cell C staff gave me a package that I did not want, I specifically told them a top-up contract, but instead they gave me a limited contract where I only received a certain amount and then my dad had to call in for more airtime. The second problem is that they have billed both my contract payment and my father's contract payment to my account when they should be debiting from 2 different accounts. I went back to the store and they were unable to help me and said that I need to come in at a later stage. My bill is running because I need to get data almost every day. I do not get notifications of what my payments will be and feel in the dark as I don't know exactly what I am paying for.