Apple India — iphone 8 is getting charged

Address: Pune, Maharashtra

I purchased it on miday ay2018 right from the beginning it was intermittently not getting charged on 29 may it was sent for repair through chroma baner pune i got it back after 4 days problem remained as it is again. It was sent for repair through chroma baner pune i got back after 6 days problem remained as it is today with my trials i found the cable is defective why service centre could not detect in two sessions how can i get replacement for defective cable