I want my money back and the contract canceled and

I went to telkom sometime this year, the aim of me going to the shop was that my brother wanted to get a phone, at this point in my life i can not afford to buy a phone as i am black listed. When we got to the shop i went to the person that always helps me when ever i am looking for a phone hoping that he will help my brother, only to find that my brother does not qualify for a phone as he does not have any credit in this name, this guy called sifiso from telkom wonder park said to me that he will make a plan and help my brother to get a phone, he then said to me just so the phone can come out he is going to put it under my name, i asked him how because i don't qualify as i am listed, he then said to me i should now worry i must leave everything to him, two day later i go back to him then he says to me i will take the phone out and the phone will debit under your brothers account but i am the one who is going to sign for it , i informed him that i don't want problems month end because i am listed and i don't quality,