Faulty phone

About 3 weeks ago I complained to you and Vodacom regarding my S6 Edge which never has signal and gets so extremely hot even if I haven't touched my phone all day! I was contacted by a Vodacom agent who told me that someone from Samsung will get back to me. I have been to your repair store o 14th Avenue only to be told that it is a Vodacom problem and I need to sort it out with them. I have also been to Vodacom also to be told that it's a Samsung problem and I need to take my phone to you! I am now tired of going back and forth trying to have my phone fixed! I paid so much for this phone in April only for it to be the WORST Samsung I even owned. I cannot afford to be without a phone as I have a 3 month old baby at home! And also cannot afford such an expensive phone that simply does not work! I want someone with authority in Samsung to phone me TODAY! I am not going to continue like this any longer. I am very willing to take it much further if this doesn't get sorted!