Q: iPhone Lightning Cord Warranty

So I bought an iPhone 6 Plus (ios 9.3.2) a few months ago and just recently the charger cord has suddenly stopped working properly. It will charge but very, very, very slowly compared to what speed it used to charge at. I have tried to charge my phone using the same cord with different power outlets and no luck. I have tried another charger and my iPhone charges just fine, which leads me to believe that it's the cord that has become faulty.

I was wondering how to go about getting a replacement or where to contact due to the fact i live about 80kms away from the nearest Apple Store? The cord itself on the outside looks like there is no damage so my suspicion is that the wires inside must have snapped somehow.

Sorry if this isn't where this is supposed to be posted or if this hs been posted before, but thanks anyway