Vodacom POOR aftersales service

I got an Iphone6 on contract from Vodacom, it is +- 18 months old. Few months ago i realized my wifi, bluetooth and GPS is not working 100%. I took it to Vodaom store and ifix both told me it cant be repaired, basically a factory fault some IC or chip on the main board that is a problem. Vodacom conveniently only offers 1 year warranty, seeing that the phone is older than 12 months, the repairing of the device now becomes my problem even though its a 24 month contract.

The issue I have is that; why should i have it fixed while it is still within the 24 month period, i understand that if i had broken the phone it would have been my responsibility, however i feel that whatever caused my wifi, bluetooth and GPS to stop working was out of my control and should therefore be fixed by Vodacom.