Telkom refuses to account

Took out a contract with Telkom for a Samsung A70. This was done on the 5th of September 2019, on the 13th of September 2019 the phone just blacked out. It didn't fall or anything, The screen went blank, the phone no longer charged. It has been taken to Samsung, but they refusing to replace it. I'm basically paying for a phone I don't have in my possession. When will my 2-year cycle end if a new phone is already being repaired?