hisense phone

Foschini *********** staff and management On the 21 January 2018 I bought Hisenset5 3 cell phone at Fochini greesntone. next i notice the poor life battery 2 hours maximum (without much use and less calls received) during charging I noticed that the phone and the charge are overheating after 30 minute. I went back to foshini on the 27 January 2018 to explain the problem The test the phone the battery was very hot after just 20 minute of charging but foschini refuse to exchange the phone but proposed to send it back to repair. why selling faulty cellphone? your term and condition said item can be exchange or refund after 7 days of purchases no send back to repair ....