Samsung S7 Battery Overheated Causing phone to POP

Good day,

I have dealt with Linda at the complaints department at Samsung. I have notified her of what had happened with my Samsung S7. The phone's battery overheated and caused the phone to pop the screen and also the back of the phone. I have been liaising since last week with her regarding this incident and she told me they would exchange the phone within 3 days. I have called her Monday the 15/01/2018 where she told me that her boss indicated that Samsung will replace me with a new device within 3 working days and she would call me back once she has an idea of which device they would be sending in exchange for the broken Samsung S7. I noted to her I do not wnat the S7 again as I am familia with the fact that it has a battery problem and this I have made mention to Samsung in January 2017 when I took the phone in for the screen repairs. I have called Linda several times this week and she did not return any of my calls. I then received an e-mail from her requesting me to take a picture of the front and back of phone which I did and I send it on to her. I have just spoken to her again, only for her to tell me they will not be replacing the device however out of good gesture they would repair the device. I told her I was not happy about this as I have mentioned to Samsung in January 2017 about the battery overheating and they obviously did not attend to it. Hello peter please assist me I am still paying on this phone it is on contract with Telkom and I dont feel I should be paying for something I dont benefit from. It is now almost 2 weeks I am without a phone and have been using my sons phone in the meantime. Please hello peter HELP!!! I feel that they should stick with their word and replace my device ASAP.