Less than 4 MONTH Contract - Charger does not work

Hi,<br> <br> I took out a new contract with Telkom Mobile Pavilion early Mar2015 - iPhone 5s, since the end of JUN2015 - they charger seems to have given up and does not charge my mobile for some reason. Yet, i am able to use other friend iPhone chargers. Is this acceptable, for a brand new product to have defects in less than 6 months?<br> I call the Pavilion branch now and Vernon tells me, I can bring in the charger - but the mobile will have to be taken in too?! wheres the logic in this? the problem is not with the mobile, but the charger - cant this simply be replaced?? A swift response would be appreciated.