Disgusting telkom service.

I renewed my phone contract on the 10th of November 2018, after consultants indicated that I could renew it and get a new phone 3 months before my old contract could end. I received my new phone, after a week being in wifi I did not realize that there was something wrong with the phone. I received a brand new phone that does work outside wifi, the mobile data does not work, I can't use applications nor go on the internet outside wifi. I cannot use the 10gigs which telkom gives me for 3 months. From the time I received the phone to this date iv been going to telkom spending hours and the consultants keep logging cases saying they are going to sort the matter, it hasn't been solved till date. Iv been stranded on many occasions for the past several months where i could not use my phone, I use my maps a lot and I could not navigate myself anywhere, I can't communicate with people when I am not at home and attend serious matters outside home . I am tired and frustrated, I am being ******, as i am paying for a phone I cannot use. I do not know what to do, because telkom does not want to give me a new phone, and a phone is an essential part of living in this day and age. If it were any other customer this would have been a major scene. I feel like ending this contract with telkom but I am sitting with a brand new phone I cannot use. It is not fair on myself and the manner in which the situation is being handled is pathetic, coming from an entity as big as telkom, I am absolutely disgusted that I received a brand new phone that does not work and nobody from telkom can assist me. I need to get this sorted out immidiately.