Frustrated and useless service

I have purchased an huawei p9 in September 2016. The phone gave me a problem after 8 months so i sent it back for repairs at telkom mobile. They told me that the phone could not be fixed and they replaced it with a new one, when i went to pick up my phone at the telkom store in pavilion durban there was an Indian guy who assisted me, he then opened the phone in front of me and i asked him about the warranty on the phone he told me its a brand new phone and the warranty will start again.

About three months ago i had a problem with my battery it kept dying at 80 percent and i took it into the store for them to assist me only to find out that the warranty is on the old phone! Which is dumb because i dont even have that phone i have a new phone! How can i still have warranty over something that i dont even have. This is so useless honestly i have a phone that doesn't work that I am still actually paying for! Your service is useless! And this is not the first device i bought from huawei but certainly i will never buy another product again from yourll again